LATEST ACTION (all times GMT)
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1316: And on that bombshell, I must leave you. As I type, Marcos Baghdatis is walking away with it on the Hisense Arena, leading Mardy Fish 6-2 5-1. Piers Newbery returns tonight to take you through day six...
1312: Blimey. Marat Safin has just told a news conference he doubts he'll be back at Melbourne Park. Boo.
1308: It's gone midnight in Melbourne and Marcos Baghdatis is now 6-2 2-0 up against Mardy Fish. Among the other highlights tomorrow: Dudi Sela v Jo-Willy Tsonga, James Blake v Igor Andreev and Richard Gasquet v Fernando Gonzalez.
1302: Depending on the duration of the Murray match, you might get the added bonus of a bit of Rafa Nadal against Tommy Haas via the same means (see below). Elsewhere tomorrow, Serena Williams begins the action on Rod Laver Arena at 0000 GMT against Peng Shaui - a player made famous by being mentioned at the beginning of Michael Jackson's Liberian Girl (I don't imagine anyone will get this).
1256: Time to start looking ahead to a feast of tennis on Saturday, featuring our own Andy Murray up against Austrian Jurgen Melzer. That match is due to kick off at 0830 GMT and will be screened live on the Red Button, streamed on the BBC website, with commentary on BBC 5 Live sports extra and text commentary on the website. You have options. That's all I'm saying.
1251: Will Melbourne Park see any more of Marat Safin? The Russian hinted before the tournament that he might call it a day after this season... He made a match of it in that third set but without his first serve firing, he was always struggling. His record against 'The Federer' now reads: won 2, lost 10.
1248: Federer stops to sign a few autographs on the way out after that rather bizarre interview with Jim Courier. He will play Tomas Berdych in the last 16, with Juan Martin del Potro or Marin Cilic possible quarter-final opponents. Action still going on over on Hisense Arena, where crowd favourite Marcos Baghdatis takes the first set 6-3 against Mardy Fish.
1246: "The grey jumper is really in at the moment. Everybody has one. Grey is a great colour. I've got the belt going - with the RF on it so I remember who I am. Shoes have my initials on them as well. They've got three symbols on there for my three titles here."
Roger Federer talks fashion with on-court interviewer Jim Courier
1243: "It's always special to play Marat. We kind of like playing each other - it doesn't matter who wins. I'm happy I won tonight. I thought he started to play really well towards the end so I'm happy I got through."
Federer 6-3 6-2 7-6 (7-5) Safin
Massive, massive controversy. Safin is 3-1 down when he is called for a foot-fault on a second serve - by the centre line judge behind the baseline. The Russian drops his racquet and tells the linesman exactly what he thinks, amid boos from the crowd. Difficult to see what happened there - but it looked a very bizarre call. But it's Federer who looks more upset, making a couple of sloppy errors and we're back on serve! Ace from Safin, backhand long by Federer and the Russian leads 5-4. Ace followed by big serve from Federer and it's match point. The world number two wins it with a brilliant, brilliant backhand down the line. Smiles from both players at the net after an absorbing third set...
Federer 6-3 6-2 6-6 Safin
Tie-break time. Fed holds to love. Fed has won seven of nine breakers against Safin.
1233: "This looks like it will be a very good win, but IMHO such is the gulf in quality between the top four and the rest that it is difficult to take much by way of comparison. I would put Federer's play here as very good, he is playing into decent form."
barrystar on 606
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Federer 6-3 6-2 5-6 Safin
Ridiculous shot from Federer, scampering across the baseline and just blocking the backhand pass crosscourt to leave Safin flailing. The world number two can't believe he misses with an audacious backhand which would have made it 40-15. Safin holds, just as Federer was looking like making the breakthrough.
Federer 6-3 6-2 5-5 Safin
Fed's serve has been magnificent tonight. Three big serves down the middle get him the game from 15-15. The first game between Baghdatis and Fish lasted 14 minutes - almost as long as it took for Federer to win the first set against Safin. Baggy took it against serve but they're all square at 2-2.
Federer 6-3 6-2 4-5 Safin
Safin hammers down a first serve. It's long, and the ball-boy bravely catches it. That's got to sting. Safin's still hanging on here...
Federer 6-3 6-2 4-4 Safin
Safin lets his racquet drop to the ground in disgust as a lame forehand hits the net halfway up. That could have been two break points. He has a chance on the next point too, taking control of it early, but Federer manages to thread a forehand down the line. Not sure the Safin racquet is going to last much longer.
Federer 6-3 6-2 3-4 Safin
That's the way to beat Federer. The world number two sends a forehand crosscourt but Safin gets his racquet onto a half-volley which comes off the frame and just about creeps over.
Federer 6-3 6-2 3-3 Safin
BBC 5 Live's Chris Bailey reports that Safin calls Rog "The Federer". That is why we love Marat. Signs that the world number two is human as he lets a 40-15 slip and faces three deuces. On the third, Federer manages to dip a quite remarkable forehand onto the sideline - and Safin still hasn't had a break point. Frustrating, even for the most level-headed of men.
Federer 6-3 6-2 2-3 Safin
Safin into a 40-0 lead, but then a spectacular mis-hit from the Russian followed by a dreamy Federer forehand makes it 40-30. Safin wraps up the game with a forehand winner down the line. This is impressive from Safin, who looked like he might crumble after dropping the first two sets so quickly.
Federer 6-3 6-2 2-2 Safin
Terribly sorry. I missed that game. Federer held though. Of that you can be sure. Marcos Baghdatis and Mardy Fish are out on court over at the alternative night session on Hisense Arena.
Federer 6-3 6-2 1-2 Safin
Safin is on his knees at the end of an incredible baseline rally. Fed whips a forehand low over the net and Safin can't handle it. But the Russian again comes back, a rather awkward-looking volley earning him the game.
Federer 6-3 6-2 1-1 Safin
Safin takes a 30-15 lead but Fed quickly slams the door. Safin slams a backhand long on game point. Federer (or Safin) will face Tomas Berdych in round four. The Czech has just wrapped up a four-set win over Stan Wawrinka. This will be Berdych's eighth appearance in the last 16 of a Grand Slam. He has only made one quarter-final.
1156: "Did I hear correctly that Marat has been street fighting?"
Anon via text on 81111
Indeed you did. And it sounds like he performed a lot better than he's managing right now.
Safin bruised after Moscow fight
Federer 6-3 6-2 0-1 Safin
Doom and gloom, Safin fans. BBC 5 Live's David Law reports that the magnificently moody Russian has only once recovered from two sets down in his 11-year career... And it wasn't against Federer. Still, the Russian hasn't quite thrown in the towel. A hold to 30.
1152: "The winner of Cilic/Del Potro will test Roger mightily in the quarters I imagine. Both young, up-and-comers with big serves and big games..."
TJSpursCanuck on 606
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Federer 6-3 6-2 Safin
Federer throws in a first double-fault of the match to make it 30-15 and then a scrappy forehand lets Safin back in at 30-30. But Safin returns into the net before Federer puts away an easy volley into the net. Federer looks very much in the mood. Less then an hour gone.
Federer 6-3 5-2 Safin
Entertaining game - but it could spell the end of Safin. Federer is actually laughing as he leaps into the air for a backhand smash - and sees the ball go over his racquet. Safin isn't smiling though. The dark muttering has started as the Russian wonders where his first serve has gone. Safin tries a cheeky angled drop shot at 30-15 but it drops just wide. The Russian can't believe it and goes to HawkEye, which only confirms the call. Fed's turn to challenge on the next point - and he's also wrong - before a clipped forehand pass from the Swiss takes us to deuce. Safin is fuming when he overcooks a forehand before another sensational forehand winner from Federer earns him the double break.
Federer 6-3 4-2 Safin
All a bit too easy for Federer right now. Can't see Safin coming back from two sets down.
ANA IVANOVIC LOSES 7-5 6-7 6-2 to ALISA KLEYBANOVA
Federer 6-3 3-2 Safin
The other day, Marat Safin was telling us how he wanted to enjoy tennis. "I want to play and be relaxed, no stress." That's going to be fully tested tonight. He dumps a forehand into the net to give up three break points. He thinks about destroying his racquet but instead bounces it gently on the ground. Fed takes the break with a stunning backhand pass. Ivanovic now 5-2 down in the third.
Federer 6-3 2-2 Safin
Still no sniff of a break point. Federer holds to love. And wouldn't you know it, there's been another break of serve over on the Hisense Arena - the 14th of the match - and Ivanovic trails 4-2 in the third.
Federer 6-3 1-2 Safin
At the risk of repeating myself, Safin's first serve is still absent. He's lucky, though, because from 30-0 up, Federer makes two fairly basic errors. Safin finally produces a big first serve to make it game point - and an ace seals it. Ivanovic back on serve against Kleybanova in the third at 2-3.
Federer 6-3 1-1 Safin
Federer fails to get his first serve in - and is duly punished as Safin blasts an off backhand return, with Fed rooted to the spot. A well-judged lob from Safin makes it 0-30. Fed gets back to game point as he wraps his racquet around a forehand so it lands plumb on the baseline. Safin makes it deuce, but Fed produces one of those remarkable forehands on the stretch to get out of trouble. Safin's patience will be stretched...
Federer 6-3 0-1 Safin
Safin gets off to a good start in the second set, getting three first serves in.
Federer 6-3 Safin
Just 26 minutes gone. This is a bit like the Federer of old. Effortless. The stats show he has made just the five errors, compared to Safin's 13. The Russian needs to improve on his 43% first serve. Big time. Kleybanova leads Ivanovic 3-0 in the final set.
Federer 5-3 Safin
Safin's first serve still AWOL and Federer steps up in magnificent fashion. The Russian double-faults at 0-40 and the world number two will serve for the set.
Federer 4-3 Safin
Safin's won a point on Federer's serve! He does so with some typically brutal hitting - and then he makes it 30-30. Federer holds but there's a bit of encouragement for the Russian there. Just as you might have thought the momentum was with Ana Ivanovic after winning the second set, she goes 2-0 down in the third against Alisa Kleybanova. Tomas Berdych now two sets to one up against Stan Wawrinka.
Federer 3-3 Safin
Federer gets airborne to stroke a forehand down the line and Safin seems almost shocked by the pace on that. Fed twice makes it deuce but gets no further. Safin's first serve deserted him in that game.
1059: "Amid all the excitement over Dokic, has anyone noticed that Wawrinka is in more than a spot of bother?"
Nick in Norwich via text on 81111
Indeed. The 'other Swiss' is one set all but a break down against Tomas Berdych in the third.
Federer 3-2 Safin
Federer makes it 12 points in a row on serve. Phenomenal start.
Federer 2-2 Safin
All going too quickly. Safin loses a point, but only the one, as he levels up. Only 10 minutes gone and we're midway through the set nearly.
Federer 2-1 Safin
Serve on top on Rod Laver Arena. Wild celebrations on Hisense Arena as Ana Ivanovic takes the second-set tiebreak against Alisa Kleybanova to take the match into a third set.
Federer 1-1 Safin
Safin is going to have his serve firing if he's going to have any chance - and he does. An ace down the middle makes it 40-0 and he matches Fed with a love service game. This is the 12th time these two have met, with Federer winning on nine previous occasions. They have met twice in Melbourne, Federer winning the final in 2004 - but Safin producing one of the performance of his life to beat the then world number one in the 2005 semis.
Federer 1-0 Safin
It's only the second point and already Marat Safin has gone to HawkEye over a serve down the 'T'. Replay shows it is well in, but Safin still doesn't believe it. Federer holds to love. 3-3 in the Ivanovic-Kleybanova tie-break.
1049: Roger Federer won the toss and will serve first against Marat Safin. Meanwhile, Ivanovic and Kleybanova head into a second-set tiebreak.
Latest: Ivanovic 5-7 6-6 Kleybanova
1047: "STOP IGNORING ME! Ahem. Please tell me when Rafa is playing! I need something to pass the Friday at work!"
Somerset via text on 81111
Some time after 0930 GMT on Saturday. Not sure that was the answer you were looking for.
1042: Roger Federer and Marat Safin stroll on to a Rod Laver Arena still buzzing from that last match.
Latest: Ivanovic 5-7 6-5 Kleybanova
1039: Wouldn't you know it? Ana Ivanovic is still battling away despite being woefully out of form. Eight breaks now in this set.
Latest: Ivanovic 5-7 5-5 Kleybanova
1037: "Caroline's backhand has really let her down today. And for a tall girl who moves well, she's doing a lot of standing still. That said, all the credit in the world to Dokic. It's wonderful seeing her back. And with Ivanovic in trouble, she could theoretically make the QFs."
Celibell on 606
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1036: Quick. Over to Hisense Arena where Alisa Kleybanova is serving for the match against fifth seed and last year's finalist Ana Ivanovic!
Latest: Ivanovic 5-7 4-5 Kleybanova
1035: "I got on tour so early and having those few years struggling with things... I really matured and in a way maybe it will work in my favour. Definitely I feel stronger. I have so many feelings and emotions right now I have no idea what to say... Since 2001, things really went downhill. To Tennis Australia, sorry for being a pain. I made things difficult but they have have been so great. This victory is for me and my team - but it's for tennis Australia and the whole Australian nation."
Jelena Dokic after her win over 11th seed Caroline Wozniacki
1029: I've got to be honest, I've got a little tear in my eye. Jelena Dokic beats 11th seed Caroline Wozniacki 3-6 6-1 6-2. The Aussie crowd rise to applaud an extraordinary display by the 25-year-old, who earlier this week admitted she suffered from depression in her early career and now does not speak to her father Damir.
1027: "Dokic v Wozniacki - what a great match! Great advert for women's tennis as it should be!"
Rob in White City, via text on 81111
1026: Another fist pump from Dokic as Wozniacki's backhand flops into the net to give the Aussie three more break points. On the second, she nails a forehand onto the baseline which Wozniacki can't handle - but the lineswoman wrongly calls it out. They have to replay the point, much to Dokic's disgust. But no problem, she keeps her cool to win the next point and after the changeover she will serve for it. The winner of this match will face the winner of Ivanovic-Kleybanova.
Latest: Dokic 3-6 6-1 5-2 Wozniacki
Ivanovic 5-7 3-4 Kleybanova
1016: Jelena Dokic is huffing and puffing. No surprise as she hasn't played at this level for a long time. But she's still a break up in the third. Ivanovic was a double break down but has now recovered one of them.
Latest: Dokic 3-6 6-1 3-2 Wozniacki
Ivanovic 5-7 2-3 Kleybanova
1002: Dokic has points for a 2-0 lead but Wozniacki digs very deep to level up. Long way to go there. Just been looking at Alisa Kleybanova's entry on Wikipedia. Here's what they reckon: "Critics agree that her weight problem and her habit of taking her eyes off the ball are two reasons why she's not able to play to her full potential." Doesn't seem to be holding her back against Ana Ivanovic, who is having the latest in six months of off days.
Latest: Dokic 3-6 6-1 1-0 Wozniacki
Ivanovic 5-7 0-2 Kleybanova
0957: Melbourne Park is buzzing (I imagine). Dokic has a break at the start of the third against Wozzy. Alisa Kleybanova has a break at the start of the second against a crumbling Ana Ivanovic.
Latest: Dokic 3-6 6-1 1-0 Wozniacki
0955: "Oh dear... Wozzy will have to play another set... Can't say I'm disappointed."
Cheeseburger in Great Yarmouth, via text on 81111
0951: And what a story this is... An out-of-sorts Ana Ivanovic loses the first set 7-5 against little-known Russian Alisa Kleybanova. The Serb served for the set at 5-3 but could not close it out.
0949: What a story this is. Dokic - currently ranked 187th - takes the second set against the 11th seed with some bludgeoning groundstrokes.
Latest: Dokic 3-6 6-1 Wozniacki
0946: It's like 1999 all over again! Jelena Dokic breaks to love and she'll serve to take this into a decider. To celebrate being back under the Aussie flag, Dokic has developed a Lleyton Hewitt-style celebration. It's a fist in the air and pull down - as if switching the bathroom light on. Try it at home if you like.
Latest: Dokic 3-6 5-1 Wozniacki
0942: Jelena Dokic looks pained as one of her shots clips the net and dribbles over. The crowd don't care though. Dokic is on a roll and consolidates the break of serve.
Latest: Dokic 3-6 4-1 Wozniacki
0941: "Maybe Wozzy and Marat could play mixed singles. Something for everyone."
Skye in Norwich via text on 81111
I'm not sure how mixed singles works. Sounds brilliant though.
0938: Update from elsewhere: Stan 'the man' Wawrinka pockets the first set against Tommy Berdych on Margaret Court Arena. Alisa Kleybanova has broken back against Ana Ivanovic on Hifive Arena.
Latest: Dokic 3-6 2-1 Wozniacki
0932: "Wozniacki is hot!"
Rob via text on 81111
How shallow... Can we get back to Marat Safin now?
0929: "Oh dear, not another obsessed Safin fan! Why do all women seem to love this guy? Good service game I bet..."
Anon via text on 81111
0926: Jelena Dokic plays her best tennis of the set to earn three break-back points, but she then seems to panic a bit and overcooks a few shots. Wozniacki gets back to deuce and then thumps down two aces to take the set.
Latest: Dokic 3-6 Wozniacki
0921: Jelena Dokic steps up and wallops a backhand winner past Caroline Wozniacki and the Dane will now have to serve for the set.
Latest: Dokic 3-5 Wozniacki
0919: "Re 0903: The 'curse' of 13?! Fed won his 13th at the US, so the curse has had him in its grip for... 0 events. Calm down ladies, come on Muzza!"
Pete via text on 81111
0915: It's funtime Friday in Melbourne. The lesser show courts have joined in on the night-match action. Stan Wawrinka is already a break to the good against Tomas Berdych on Margaret Court Arena, while Ana Ivanovic and Alisa Kleybanova are doing battle over on the Hifidelity Arena. Two games each there.
Latest: Dokic 2-4 Wozniacki
0909: Massive support for Jelena Dokic, the Serb-turned-Australian-turned-Serb-turned-Australian. Tight contest with plenty of deuces, but 11th seed Caroline Wozniacki is winning the vital points.
Latest: Dokic 1-4 Wozniacki
0903: "Oh I cant decide! Setting aside the fact I want to be marry Marat, I am torn. If Marat wins he might drop this silly retirement talk but I want Roger to silence the naysayers and break the curse of 13. Arghhh!"
Anon via text on 81111
This text could have come from me. It didn't. But it could have.
0855: Of course, if it's variety you're after, you'll be better off dusting off a video of Bruce Forsyth's Live at the Palladium, because you can be sure Dokic and Wozniacki will be standing steadfastly at the baseline, whacking the ball at each other for the next hour or so. Wozniacki has held her opening service game but only after a monumental struggle.
Latest: Dokic 0-1 Wozniacki
0848: And of course there's British interest in this match as Alison Lang is in the umpire's chair. She's done a lovely job so far too.
0843: Don't get me wrong though. I am actually quite intrigued by this match. Good to see Jelena Dokic back in the big time, while Caroline Wozniacki is the women's tour's rising star. She has quite a sizeable male fan club too.
0840: Lovely timing from Mr Bevan there, leaving the chair just as Caroline Wozniacki and Jelena Dokic head out to kick off Friday's night session. Wozniacki, in particular, looks very excited. Maybe she, like me, is in a hurry to get this match over so we can all watch Marat Safin (and Roger Federer)...
0836: That's all from me folks. It's been a long night but a good one, and mainly thanks to you. I leave you in the very capable hands of Caroline Cheese to take you through the rest of the day's play. Enjoy. See you on Sunday.
0834: "To all students who are still up from earlier, it's been a long night but we've done well. I think we all deserve a Brit-Up graphic for our efforts, true British grit!"
Luke in Sheffield, via text on 81111
Yes. Well done everybody. You've done your country proud.
0825: Once the Dokic-Wozniacki match is done and dusted, it will be time for the one we have all been waiting for (especially Ms Cheese). Yes, Marat Safin v Roger Federer, a repeat of the 2004 final and a match-up of two former Australian Open champions.
And last on on the Hisense Arena is 2006 runner-up Marcos Baghdatis against 23rd seed Mardy Fish. The winner of that one plays defending champion Novak Djokovic.
0815: First up on the Hisense Arena at 0830 GMT is the reigning French Open champion, and former world number one, Ana Ivanovic. She takes on 29th seed Alisa Kleybanova.
At the same time, over on Rod Laver Arena, rising Danish star Caroline Wozniacki is up against home hope Jelena Dokic. Neatly, the winner of that one will play either Ivanovic or Kleybanova.
0810: Not an awful lot is going on around the courts at Melbourne Park right now, but the floodlit matches are mere minutes away from starting. But Caroline Cheese has arrived in the office to take charge of this text commentary and that has got to be worthy of a Brit-Up graphic.
0801: Roddick's 22nd ace of the match puts him on the brink of victory and he seals his win with a precise passing backhand shot into the corner. That was easy enough for the seventh seed, who will actually face Tommy Robredo next, not Marin Cilic - sorry for the duff info just now but I've been up an awfully long time.
Result: Roddick 6-3 6-4 6-2 Santoro
0758: Another break, and A-Rod will serve next to put Santoro out of his misery.
Latest: Roddick 6-3 6-4 5-2 Santoro
0752: If Roddick does go on to win this match, then he will face Spain's Tommy Robredo, in the fourth round. The way he holds here, to love, suggests he is not far away now.
Latest: Roddick 6-3 6-4 4-2 Santoro
0750: If this match was a rug, then it has just been pulled from beneath Santoro's feet. He puts an attempted drop-shot into the net and Roddick has another break of serve, his third of the match. The volume of A-Rod's roar of delight makes me think he believes it could be decisive.
Latest: Roddick 6-3 6-4 3-2 Santoro
0745: Santoro is plugging away gamely but Roddick is close to finishing him off completely - the seventh seed has two break points here that just get away from him before the veteran holds. Oh, and bearing in mind the Frenchman took umbrage at Roddick at the US Open for allegedly trying to hit him with his serve (see 0029), it is worth mentioning that Roddick has to jump over one Fabrice delivery that lands on the wrong side of the baseline!
Latest: Roddick 6-3 6-4 2-2 Santoro
0738: World number one Rafael Nadal is also playing under the floodlights, taking on Tommy Haas in the second night game on the Rod Laver Arena after women's fourth seed Elena Dementieva has played Australia's Sam Stosur.
0731: Worth repeating that Andy Murray has been handed another evening slot for his third round match with Austria's Jurgen Melzer. He will be on at the Hisense Arena from 0830 GMT and you can watch him live on the BBC, red button and this website (UK users only). Live commentary will also be available on BBC Radio 5 Live sports extra.
0729: Unbelievable. Well, I was right, but I really shouldn't have been - Santoro only got to 0-40 on the Roddick serve before the American fought back. A couple of the Frenchman's shots fly agonisingly long and, before you know it, A-Rod is at set-point and a wild return puts him two sets up.
Latest: Roddick 6-3 6-4 Santoro
0723: Back to the Hisense Arena, where Santoro needs a break of serve to rescue the second set. That may not sound impossible but Roddick has not let him have a sniff all day and I fear this match may not last much longer unless the Magician can conjure up a fightback - producing a rabbit from underneath his cap won't help him much.
Latest: Roddick 6-3 5-4 Santoro
0718: Marat's sister, Dinara Safina, is already through to round four in the women's draw and, although she hasn't seen him all week, she will be along to lend her support when he takes on Fed later. "It is going to be a great match," she said. She's right you know.
0715: Not long to go now until the floodlit matches get going on the Rod Laver Arena - Caroline Wozniacki and Jelena Dokic are first up at 0830 GMT, followed by a real clash of the titans in Roger Federer and Marat Safin. Both those matches are live on the BBC via the red button and on this website (UK users only) and commentary will also be on 5 Live sports extra.
0709: Uh-oh. More trouble for Santoro. He rescues three break points from 0-40 but A-Rod thumps a backhand past him at the net to earn another and is in at the net to finish off the game. The seventh seed is bossing this one.
Latest: Roddick 6-3 3-2 Santoro
0706: Here's Jelena Jankovic on her struggle to see off Ai Sugiyama, who she definitely rates as a difficult opponent, even at the age of 33. "It was a tough day at the office, Jankovic said. "Ai is a very solid player and I had to earn every point."
0659: More news of misbehaviour at Melbourne Park (see 0639) but this time from the players. Nicole Vaidisova has become the first woman to be fined at this year's Australian Open, joining 18 men who have already been penalised for bad behaviour. The worst offender? Ryan Sweeting of the United States, who received three separate fines totalling $1,000 for raquet and verbal abuse. It probably won't come as much of a surprise to learn that he lost in qualifying.
0656: As I explained right at the start of the day's play (0029), A-Rod and Santoro are not exactly firm friends so I will keep you posted if either of them start trying to do each other damage. As far as tennis goes, Roddick is on top at the moment but Santoro looks in determined mood to me - don't write him off just yet.
Latest: Roddick 6-3 0-1 Santoro
0652: Not the most convincing performance by the women's top seed and world number one Jelena Jankovic but she is into round four after seeing off Ai Sugiyama and gives us a big smile too - of relief I expect. She plays 2007 Wimbledon runner-up Marion Bartoli in round four.
Result: Jankovic 6-4 6-4 Sugiyama
0646: Jankovic has moved to within one game of victory but still does not look happy. Over at the Hisense Arena and Santoro is clinging on at 3-5 in the opening set but Roddick is serving to try to wrap it up.
0639: News of what the fans at Melbourne Park have been up to - and it is not good. Not only did scuffles break out between Bosnian and Serbian fans after Novak Djokovic's thrilling win over Amer Delic, but there was a streaker - not sure whether it was a he or a she, but I suspect it was the former - during a doubles match on Court Three between the Williams sisters and Ayumi Morita and Martina Muller. Serena and Venus won 6-3 6-3 in case you are interested.
Latest: Jankovic 6-4 5-4 Sugiyama
0631: Phew! Good to see Fabrice off the mark, I was a bit worried for a second there. A-Rod leads 3-1. Jankovic, meanwhile, has gone a break up in the second set and leads 6-4 4-3. Sugiyama is injured too, so it does not look very promising for the Japanese star.
0629: This is Santoro's 17th appearance at the Australian Open but he has only been in the last eight once, in 2006. In fact he has only been past this stage (the third round) on one other occasion, in 1999. But he is only 36 so time is on his side...
0625: Andy Roddick and Fabrice Santoro have got their third-round match under way on Hisense Arena. It has not been a magical start for the Magician, to be honest, he has just been broken in his first service game and trails 0-2. Still plenty of time for the Frenchman to get his double-handed forehand going though.
0622: If anything, it is Sugiyama who looks more settled at the moment and she has definitely upped the tempo. Jankovic, meanwhile, is fidgeting badly between points and I've lost count of the number of times she's tweaked her shoelaces.
Latest: Jankovic 6-4 2-3 Sugiyama
0609: Top seed Jelena Jankovic is a set up againstAi Sugiyama but has just had to save two break points at the start of the second set so is not having things all her own way. I think both players are feeling the heat - it is 27C in Melbourne - which is as good a reason as any for a sunshine graphic, surely?
0602: The shadows are creeping across the Rod Laver Arena as Alize Cornet completes a battling 4-6 6-4 6-2 win over 2008 semi-finalist Daniela Hantuchova. The French star blows kisses to an appreciative crowd to celebrate her victory and she will play Dinara Safina next - they are both big-hitters so that should be an interesting one.
0554: Bad news for Yen-Hsun Lu, the conqueror of 10th seed David Nalbandian in round two. He picks up just six games as he is thumped 6-1 6-3 6-2 by Tommy Robredo, the 21st seed from Spain.
0548: Plenty still to come today though. Andy Roddick and Fabrice Santoro are on Rod Laver Arena when Hantuchova's match with Cornet is over and, of course, we have the main event - Roger Federer against Marat Safin to round things off.
0538: I've just seen the schedule for Saturday's play and British number one Andy Murray has been given another evening match which, given the high temperatures around Melbourne Park during the day, will probably please him. He faces Austria's Jurgen Melzer in the first floodlit match on Hisense Arena at 0830 GMT.
0532: Marion Bartoli finishes off her match with L Lucie Safarova in double-quick time, coming through 3-6 6-2 6-1, while Jankovic - who is yet to win a Grand Slam, remember? - is a break up in the first set of her match and leads 3-1.
0523: Alize Cornet and Daniela Hantuchova are having a right old battle on the Hisense Arena and it is French teenager Cornet who is on top at the moment - she took the second set 6-2 to level the match and has just broken in the first game of the decider.
0515: Women's top seed and 2008 semi-finalist Jelena Jankovic has just started her match with Japan's Ai Sugiyama on Rod Laver Arena - if she comes through that, the Serbian will face Bartoli or Safarova in round four.
0510: Not surprisingly, defending champion Novak Djokovic is a very happy bunny indeed after surviving an incredible match with lucky loser Amer Delic. "It was a great battle," said the third seed. "I look on the positive side - I played a tough match which is good for my game and my rhythm."
0506: And the men's 21st seed, Tommy Robredo of Spain, took the first set of his match against Yen-Hsun Lu and is a break up at 5-3 in the second - the winner of that match faces Andy Roddick or Fabrice Santoro.
0503: French 16th seed Marion Bartoli lost the first set 6-3 against Lucie Safarova of the Czech Republic but has just bounced back to take the second set 6-2.
0500: Now that Djoko is safely through I have got time to bring you a proper update of the scores around Melbourne Park. Daniela Hantuchova took the first set 6-4 against Alize Cornet, who turned 19 on Thursday, but the big-hitting French star is a break up at 4-2 in the second set.
0453: That was the sort of match you just don't want to end and it was great to see smiles by Novak Djokovic and Amer Delic at the end.
"Djokovic will just be happy that he came through that. It was a good test for him and maybe it is the test he needed at the heart of a slam. For Delic, it will show him that he has what it takes to break into the top 100, which is where he should be."
Chris Bailey on BBC Radio 5 Live
0450: Delic puts a forehand into the net and it's all over. Djoko is through but what an effort by Delic. Maybe it's down to the fact that I have been awake all night but he doesn't half look like Roger Federer - he played a bit like him too - but the defending champion is through after a real struggle with the world number 127. What a great match.
Result: Djokovic 6-2 4-6 6-3 6-6 (7-4) Delic
0439: Delic is struggling on his forehand a bit and that is where Djoko is picking up most of his points at the moment. A double-fault on serve at 40-15 doesn't help his cause but another Delic forehand finds the net and we are into a tie-break.
Latest: Djokovic 6-2 4-6 6-3 6-6 Delic
0436: No wobbling on serve for Delic and that means Djoko is under more pressure to hold next time - the players have now been out on the Rod Laver Arena for almost four hours and this is becoming an absolute classic.
Latest: Djokovic 6-2 4-6 6-3 5-6 Delic
0430: So near and yet so far for Delic as Djoko comes back from 15-40 and saves two set points to hold thanks to three big serves (including two aces) and a lucky netcord. Delic has been in delicious form but Djoko is hanging on.
Latest: Djokovic 6-2 4-6 6-3 5-5 Delic
0426: Wow. If anything, the Delic serve is getting bigger - he booms down one 137mph delivery and follows that with a 139mph monster - Fabrice Santoro would not approve (see 0029). Djoko to serve to stay in the fourth set.
Latest: Djokovic 6-2 4-6 6-3 4-5 Delic
"After hearing the comments on the Federer-Safin match later, I honestly think Roger will win in three tight sets! Safin doesn't move as well as he used to due to his knee injuries but Del Potro will test Federer for sure - also Murray's backhand is awesome! Such art..."
Anon, via text on 81111
Yep, you'd think Fed would have the edge but Safin is a dangerous beast - depends what mood he is in of course, which is a good reason to chuck in a tantrum graphic.
0421: Delic is cool enough to do a few keepy-uppies after a stray Djoko backhand takes us to 30-all. A big point this next one and a Delic volley at full-stretch falls just the wong side of the net before a big serve helps the champion hold, just.
Latest: Djokovic 6-2 4-6 6-3 4-4 Delic
0416: More magical stuff from Delic, the world number 127, who has plenty of tricks up his sleeve on either flank and is quickly in at the net on every point as he holds again to put the pressure back on Djoko in this fourth set.
Latest: Djokovic 6-2 4-6 6-3 3-4 Delic
"Delic has changed his approach halfway through, he had an injury timeout because of a sore toe and has served and volleyed a lot more to try to shorten the points since then. He certainly shouldn't be where he is in the rankings because he is much, much better than that."
Chris Bailey on BBC Radio 5 Live
0413: The Djoko serve is looking ominous but Delic produces a crosscourt backhand winner out of nothing while trailing 40-0. It doesn't hold up the champion for long but it shows how dangerous the lucky loser still can be.
Latest: Djokovic 6-2 4-6 6-3 3-3 Delic
0410: Delic is still fighting on, and still playing with a flourish too, to the delight of his supporters on Rod Laver Arena. He holds with ease and Djoko still has work to do here.
Latest: Djokovic 6-2 4-6 6-3 2-3 Delic
0405: No problems here for Djoko, who slams down another big serve and holds to love. On Court Two, Yen-Hsun Lu, who knocked out 10th seed David Nalbandian in round two, has just started his match against Spain's Tommy Robredo, the 21st seed.
Latest: Djokovic 6-2 4-6 6-3 2-2 Delic
"The plethora of students still hard at work has buoyed me to plough through my essay due in for tomorrow! No sleep tonight but at least I will know the tennis scores."
Anon, via text on 81111
0401: Both Djokovic and Delic are producing some terrific stuff, with a precise baseline smash by Novak into the far corner of the court one the highlights of the opening exchanges of the fourth set, which has gone with serve so far. Around the courts, Daniele Hantuchova and Alize Cornet are under way on the Hisense Arena and, on Margaret Court Arena, Lucie Safarova of the Czech Republic is an early break up against French 16th seed Marion Bartoli, leading 2-1.
Latest: Djokovic 6-2 4-6 6-3 1-2 Delic
0356: Now seems like a good time to remind you about the games you will be able to watch live later today on the BBC using the red button and on this website (UK users only). Rising Danish star Caroline Wozniacki plays Jelena Dokic at 0830 GMT and that will be followed by a repeat of the 2004 final between Marat Safin and Roger Federer, which should be pretty special. As well as watching those matches, you can listen to commentary on 5 Live sports extra too.
0351: That's the mark of a champion though folks - Djoko bangs down four big serves to hold to love and he is back in control of this match. Another Russian is through in the women's fourth round by the way - Vera Zvonareva has thumped Sara Errani 6-4 6-1 - following her compatriots Dinara Safina and Nadia Petrova who have already progressed today.
Latest: Djokovic 6-2 4-6 6-3 0-0 Delic
0348: Delic makes plenty of errors but he is great to watch - coming into the net three times here, twice when facing break and set points - and putting away sublime volleyed winners. He thumps down a big serve that Novak can only return into the net and this third set is still very much alive, even if Djokovic will serve for the set next.
Latest: Djokovic 6-2 4-6 5-3 Delic
"Another student coming out of the woodwork, we're all in this together guys! doing my final dissertation though I have a graduate job..this has meant no sleep through the week and a huge thanks to this forum! "
Anon, via text on 81111
0344: While we've been following Del Potro's progress, Delic has been receiving treatment for a foot injury over on Rod Laver Arena. We're back under way in that one now though and the lucky loser is serving to stay in the third set.
Latest: Djokovic 6-2 4-6 5-2 Delic
0342: Del Potro has done it! He comes into the net to punch away a volley into the far corner and complete a 6-7 (5-7) 7-5 6-3 7-5 win that puts him in the fourth round for the first time - he will play 19th seed Marin Cilic next. The crowd show their appreciation for Gilles Muller at the end too - as the stadium announcer puts it, it was a "great effort" by the Luxembourg legend.
0337: A big, big point for Juan Martin del Potro against Gilles Martin. The Argentine sixth seed claws his way to a break point at 5-5 and uses every inch of his 6ft 6in frame to stretch to put away a volley at the net and move 6-5 up. He will serve for the match next.
0335: Djokovic holds serve to go 4-1 ahead in the third set but he is only one break up. It is still too close to call over on the Hisense Arena where Del Potro and Gilles Muller are locked at 5-5 in the fourth set - the Argentine is two sets to one up though.
Latest: Djokovic 6-2 4-6 4-1 Delic
0329: Sorry about that, I think I turned invisible for a moment there. Back to normal now though, and just in time to see 19th seed Marin Cilic complete a very impressive 7-6 (7-5) 6-3 6-4 victory over the Spanish 11th seed David Ferrer.
0325: Delic has got a big serve but he is inconsistent - hence his world ranking outside the top 100. Djokovic can do nothing with his serve this time, though, and the Bosnian-born American is off the mark in this third set. Latest: Djokovic 6-2 4-6 3-1 Delic
There is no stopping 5 Live's David Law either - here he is again with another Delic fact:
"Delic was coached for three years by Craig Tiley, who is now the Tournament Director of the Australian Open."
5 Live's David Law from Rod Laver Arena
0323: Djokovic cannot push on without a fight though - he trails 15-40 on serve before digging deep to hold, just, thanks to some solid serving.
Latest: Djokovic 6-2 4-6 3-0 Delic
This is turning into a cracking match and here is 5 Live's David Law from Rod Laver Arena to give us some timely information about Amer Delic:
"When he broke Djokovic in the last set, Delic celebrated with the Swedish 'Vicht' or the Hewitt 'C'mon' sign - where he points toward his forehead with his fingertips. A row broke out a couple of years ago as Hewitt apparently tried to trademark the celebration when it had in fact been invented by Mats Wilander and former Swedish pro Niclas Kroon."
5 Live's David Law from Rod Laver Arena
0317: Hmmm. Not so good that - two double faults by Delic give Djokovic a break point at 30-40 and a wild forehand on the next point gives the third seed a break right at the start of the third set.
Latest: Djokovic 6-2 4-6 1-0 Delic
0315: Djokvoic is back out and Amer Delic is serving at the start of the third set. By the way, the fourth set of Juan Martin del Potro's clash with Gilles Muller is going with serve and the Argentine is 2-3 down. He does lead by two sets to one though.
0312: Djokovic is taking a break after losing that second set. While we are waiting for him to come back I will tell you that over on Court Two, women's seventh seed Vera Zvonareva of Russia has taken the first set 6-4 against Italy's Sara Errani. The winner of that match plays another Russian, 10th seed Nadia Petrova, in round four.
"Delic came up with some really good shots in that second set to put Djokovic under pressure and that is the first set dropped by any of the big four - Rafael Nadal, Roger Federer, Novak or Andy Murray - this year at Melbourne."
BBC Radio 5 Live's Alistair Eykyn on Rod Laver Arena
0306: Delic puts in a couple of huge serves to move 30-0 up and Novak can only applaud as his opponent comes into the net to put away the next point too and earn three set points. He only needs one, however, thumping down another big delivery to level the match.
Latest: Djokovic 6-2 4-6 Delic
0300: Delic is going from strength to strength against Djokovic and most of what he is trying is coming off. A big game for the Bosnian-born American next, however, as he will serve for the second set against the defending champion.
Latest: Djokovic 6-2 4-5 Delic
0256: It is looking good for Marian Cilic on Margaret Court Arena. The Croatian 19th seed went a break down early in the second set against David Ferrer but he has only dropped one game since and has just taken it 6-3.
Latest: Cilic 7-6 (7-5) 6-3 Ferrer
"Cilic has a big future. It wouldn't surprise me if he takes out Ferrer because he is one of a crop of young guys who I expect to come through this year."
Chris Bailey on BBC Radio 5 Live
0253: Indeed, Del Potro has just taken that third set 6-2 against Muller. Meanwhile, Amer Delic has built on that break against Djokovic in the second set and is now 4-3 up. He reached deuce on the defending champion's next service game too.
"Novak has got a bit of a battle on. Delic has got a big game and it was misfiring in the first set but he is starting to find inside of the courts a bit more now. He is settling down and showing a bit of the talent we know he has."
Chris Bailey on BBC Radio 5 Live
0243: Since being broken early in the third set, Juan Martin del Potro has not looked back and has opened up a 5-2 lead against Gilles Muller, and it is one-set all in that one of course. Whoever comes through that one will play Marin Cilic or David Ferrer in round four.
"I too am among the masses revising for my (final) exam tomorrow. Can't wait for tomorrow night when i can finally pay attention without any distractions!"
Craig from Edinburgh, via text on 81111
0236: Djokovic is finding things a lot tougher in the second set against lucky loser Amer Delic who has just broken to lead 3-2 after a series of superb shots. Delic is playing to the crowd too and things could get lively.
"There is a long way to go yet but Novak is not having things all his own way against the world 127. Delic is beginning to grow in confidence out here."
BBC Radio 5 Live's Alistair Eykyn on Rod Laver Arena
0230: Interesting news from the Hisense Arena, where Del Potro has been broken by Gilles Muller in the third set of their match and trails 2-1.
0225: "Actually Del Potro will/would play Fed in the quarters. The joys of proving someone wrong on the internet!"
Ross, Twickenham, via text on 81111
You're right Ross. That was a deliberate error though, of course. I'm just checking everybody is still awake.
0219: I sense Dinara Safina has not been entirely happy with her early form at Melbourne - all flower pots in the area should beware - but she seems a lot more satisfied with the way she despatched Kai Kanepi 6-2 6-2 to reach the fourth round for the first time. "Finally I played my game," the third seed said. "Compared to my first two matches, I reached my level. From now I have to play like this or even better every day because it will get tougher and tougher."
0215: And Novak Djokovic also has the first set in the bag against lucky loser Amer Delic, a Bosnian born America, breaking again to take it 6-2.
0215: Two set points for Marin Cilic in his tie-break with David Ferrer. The first comes and goes when the Croatian stoops to put a volley into the net but Ferrer is off-target with a forehand on the next point and the 19th seed is one set up.
0211: "I'd like to add my name to the contingent of students following the updates tonight. I too have an exam in the morning! All this tennis is proving to be welcome respite from exam stress. My only regret is that I'll be in an exam hall when my hero Fed plays."
Rakhesh from Loughborough, via text on 81111
Rakhesh, the good news is that once your exam is over you will be able to watch replays of that match on the red button and this website. So you won't miss a thing.
0209: Marin Cilic and David Ferrer are into a first-set tie-break and it is the Croatian who has his nose in front, one mini-break giving him a 4-2 lead at the moment.
0206: A breakthrough for Juan Martin Del Potro who, at the fourth time of asking, converts a set point to take the second set 7-5 against Gilles Muller and level the match at one set-apiece. A long way to go in that one on the Hisense Arena though.
0202: I bring bad news from Court Six. Britain's Ross Hutchins and his his Australian partner Stephen Huss are out of the men's doubles. They have been beaten 6-4 3-6 6-3 by the sixth seeds, Mariusz Fyrstenberg and Marcin Matkowski of Poland.
0200: Novak Djokovic is a break up against Amer Delic and leading 3-1 in the first set. I'm sure it will make the defending champion feel better that I have made him favourite to win this one...
0157: "Come on Del Potro! He could trouble Roger Federer and anything to make the master's route harder has to benefit Andy Murray."
Laurence, Cambridge via text on 81111
Del Potro and Fed could meet in the semi-finals, in case you were wondering.
0153: Having said all that about Muller, he promptly double faults twice to hand Del Potro two set points. He is lucky to survive the first one - the Argentine should have put a volley away - but a big serve digs him out of trouble in the second. Muller is not out of the woods yet though, as he then sees a routine crosscourt forehand land halfway up the net. That is set-point number three but three big serves dig the Luxembourg legend out of trouble - stand by for a Del Potro tantrum!
Update: Del Potro 6-7 (5-7) 5-5 Muller
0146: A first chance for Gilles Muller to break Del Potro but he tries to be too clever with a angled shot at the net and the Argentine holds to go 5-4 up. The man from Luxembourg has definitely got the best groundstrokes in his locker, however, and the sixth seed is relying on his big serve to keep him in this one.
You may not have heard of Muller, the world number 87, before but here's David Law of 5 Live fame with some good reasons why Del Potro should fear him.
"Prior to the US Open in 2005, Andy Roddick was the subject of a hugely smug American advertising campaign in anticipation of his inevitable run to the final. Gilles Muller beat him in straight sets in the first round. He also beat Nadal at Wimbledon the same year."
BBC Radio 5 Live's David Law.
0142: Defending champion Novak Djokovic and Amer Delic are out on the Rod Laver Arena and warming up.
"I'm expecting something a bit special from Djokovic after his comments yesterday about the favourites."
Anon via text on 81111
Personally, I don't think the 'favourite' tag matters too much...Djokovic is the defending champion which brings its own pressure. He and Roger Federer do seem to have a bee in their bonnet over the attention Andy Murray is getting in Melbourne but Rafael Nadal is not getting involved - a wise move if you ask me.
0137: On paper, the match between 19th seed Mario Cilic and 11th seed David Ferrer looked like being close and that's exactly how it is turning out - going with serve at 3-2 to the Spaniard so far in the first set on the Margaret Court Arena. Early days in that one, though.
0133: The second set between Del Potro and Muller is, rather predictably, proceeding with serve. The Argentine is 4-3 up but let's remember he is a set down.
"Question Chris - Is it just me or is it entirely students following this? (I'm also celebrating my birthday with late night study.) Happy birthday, Tim (see 0027)."
Peter via text on 81111
Yep, just students celebrating their birthdays by the looks of things. Many happy returns to you too Peter - by the way, surely that is what you say to a tennis player on his birthday?
0128: Ross Hutchins serves to take the second set 6-3 and he and Stephen Huss are level at a set-apiece against Polish pair Mariusz Fyrstenberg and Marcin Matkowski. Game on.
0126: Safina is safely though and we will shortly see defending men's champion Novak Djokovic emerge for his match with marathon man Amer Delic, who has reached this stage after two five-set victories.
0123: It's all over on the Rod Laver Arena where, Safina seals a straightforward 6-2 6-2 victory over Kaia Kanepi when the Estonian puts a forehand into the net. The third seed will play 19th seed Daniela Hantuchova or big-hitting French hope Alize Cornet in round four.
"Safina is in a different league to opponents like this really - the name of the game in these early rounds is to progress without difficulty and she has just done that.."
Chris Bailey on BBC Radio 5 Live.
0116: No stopping the Safina serve either - Kanepi cannot get near it and, when she does, the third seed also produces a brilliant whipped forehand winner on the run that flies down, and on to the line. The third seed is now 5-1 up in the second set. Over on the Margaret Court Arena, Marin Cilic of Croatia and David Ferrer of Spain are warming up.
0113: Dinara Safina has just gone two breaks up in the second set and leads 4-1. Her returns are too hot for Kaia Kanepi to handle and the Estonian is close to complete collapse. By the way, if Safina goes on to win the Australian title, she will also take over the world number one ranking...that is a way off at the moment though.
0109: Good news for Ross Hutchins though - he and Stephen Huss may be a set down but they are a break up in the second set and currently lead 3-1. Not all bad for the Brits then...
"(See 0053) Seeing as Marat Safin holds the ATP record for both most rackets broken in a season and most rackets broken in a career I would think you will!"
0103: Things did not get any better for Anne Keothavong and Mervana Jugic-Salkic in their doubles match against Maria Kirilenko and Flavia Pennetta. the Brit and her partner lost the first set 6-1 and, sadly, Keo was broken twice in the second set as her opponents took it 6-2 to complete a comfortable win.
Ed in Hull via text on 81111
0103: Wow. Del Potro has two serves for the first set at 5-4 but a couple of brilliant Gilles Muller winners - and a Del Potro double-fault - gives Muller a set point at 6-5 and he duly converts it. The Del Potro racquet takes the brunt of that little slip for our first tantrum of the day!
0059: We're into a tie-break between Muller and Del Potro and the big serves keep on coming - Muller has just hit his ninth ace of the day and he had already managed 27 in his previous two matches. Del Potro has managed a mini-break, however, and leads 4-2.
0056: Ross Hutchins and Stephen Huss have just dropped the first set against Fyrstenberg and Matkowski with the sixth seeds taking it 6-4 thanks to a single break...a bit of work to do for our boy to turn that one around.
0053: Dinara Safina has taken the first set 6-2 against Kaia Kanepi. No tantrums from Marat's little sister yet - will I get the chance to use that graphic again today?
0050: Ah, more news from the Margaret Court Arena, where Voskoboeva has retired hurt after losing that first set - she didn't hold serve once and has a shoulder problem, apparently. Petrova becomes the first player through today, and she will play Sara Errani or Vera Zvonareva in the fourth round.
0047: Another Russian, the 10th seed Nadia Petrova, made short work of Galina Voskoboeva in the first set, dropping one service game as she took it 6-1. Speaking of serves, Del Potro has just let loose the fastest delivery of the day - a dinked 129mph effort...can't help thinking that would have done some damage to Santoro (see 0029).
0044: Oh dear, another Brit-down graphic I'm afraid. Ross Hutchins and Stephen Huss have been broken in the first set of their match against Polish pair Mariusz Fyrstenberg and Marcin Matkowski and trail 5-3.
0041: Dinara Safina is not hanging about on the Rod Laver Arena and leads 4-1 against Kanepi. Bad news for the Brits, though, Keo has just lost the first set 6-1
"Safina has had a bit of a mixed time of it in Melbourne so far but she is two breaks up already here. She has never been past the second round here before but here chances are looking better by the game."
Radio 5 Live's Alistair Eykyn.
0037: Another love serve game for Juan Martin del Potro but Muller is still matching him at the moment.
"Chris, I'm celebrating the first few hours of my 20th birthday by doing a worksheet on the anatomy of the small intestine! Keep the updates coming."
Tim, Birmingham via text on 81111
Hmmm. A worksheet on the anatomy of the small intestine? Sounds like a lot to digest to me...Happy birthday though Tim!
0036: Hmmm, it is not looking good for Anne Keothavong, who came to Melbourne in great form but went out in the first round of the singles. She has reached the second round of the doubles but her and Jugic-Salkic are trailing 4-1 in the first set against Maria Kirilenko and Flavia Pennetta.
0032: Del Potro has only dropped one point on serve so far, which isn't a surprise because you can barely see it. Not sure Santoro would like to be on the other side of the court. Muller is holding out too, however, and that one is with serve at 3-2 to the man from Luxembourg in the first set.
0029: "Got an essay in for uni tomorrow deadline at 12. Waiting for A-Rod to come on anyway so what better time to touch up the essay last minute! COME ON A-ROD!"
Anon via text on 81111
Roddick's match against 'The Magician', French veteran Fabrice Santoro, is third on the Hisense Arena. It should be a bit spicy too - they had a fall-out when Roddick won at the US Open in 2008 - Santoro accused him of trying to hit him with his serve.
0026: Apologies for the lack of live streaming so far - I know from your texts a lot of you want to watch the Ross Hutchins in his doubles match (currently all-square in the first set). We haven't got a feed of that match, which is why the Elena Baltacha match from yesterday is still on the red button.
0022: We've got another Brit in action at the moment too - Anne Keothavong is partnering Jugic-Salkic in the women's doubles. They are playing Maria Kirilenko and Flavia Pennetta in the women's doubles but they are a break down in the first set.
0015: Not much messing about in the first two games of the Del Potro-Muller match. Both have huge serves and both hold easily enough.
"Is it me or does Gilles Muller look the exact opposite of a tennis player, bit weird isn't he?"
Hassan, Ealing via text on 81111
Well, he's tall (6ft 4in in fact) - which makes him ideal for a tennis player to be honest. Just ask Del Potro, all 6ft 6in of him.
0010: Elsewhere at Melbourne Park, Marat's sister, the women's third seed Dinara Safina, is first on the Rod Laver Arena where she takes on Estonian clay-court specialist Kaia Kanepi. No tantrums yet from Dinara, but a hot temper runs in the family so be warned!
And Safina's compatriot Nadia Petrova, seeded 10th, is under way against Galina Voskoboeva of Kazakhstan.
0009: By the way, Muller became the first person from Luxembourg to reach the fourth round of a Grand Slam in the 2008 US Open. He ended up losing to Roger Federer in the last eight.
As a proud Welshman, I'm sad to report that no Welsh player has ever managed to progress as far as that in a Slam...our best effort was Sarah Loosemore's run to the third round of the Australian Open in 1990.
0007: Juan Martin del Potro, the Argentine eighth seed, and Gilles Muller, Luxembourg's greatest ever player, are out on court on the Hisense Arena and warming up.
0004: Oh, and I forgot to mention that British doubles pair Ross Hutchins and his Australian partner Stephen Huss are back in action today - they're first up on Court Six against Polish pair Mariusz Fyrstenberg and Marcin Matkowski, the sixth seeds, in the second round.
0002: "(see 2345) Haha, my last exam was today! But I do have an essay due on Friday, there is no rest!"
Anon via text on 81111
2359: Also coming up later is the showdown between Caroline Cheese's favourite Russian tennis hunk, Marat Safin, and former world number one Roger Federer. Should be a cracker, that one.
That match is under the floodlights on the Rod Laver Arena and will be live on the BBC via the red button following the match between Caroline Wozniacki and home hope Jelena Dokic, which starts at 0830 GMT. Commentary for that clash will also be on 5 Live sports extra and on this website (for UK users).
2357: Novak Djokovic, Andy Roddick and Juan Martin del Potro are all back on court in the next few hours (or, in some cases, minutes) as are Dinara Safina and Jelena Jankovic. See? I told you there was a lot of tennis.
2354: So what's happening on day five? I hear you ask. The answer is: A lot of tennis. Absolutely loads, in fact.
2351: But reigning Wimbledon champion Venus Williams, who has won seven Grand Slam singles titles and was the women's sixth seed here, is out after her second round defeat by Carla Suarez Navarro on day four. Surprised? I know I was.
2348: Have you been paying attention to what's been going on at Melbourne Park this week? Yes? Good. But, just in case you haven't, I should tell you that there have been no major shocks in the early rounds of the men's tournament, with all top eight men's seeds safely through - including our very own Andy Murray.
2345: Right then. The third round of the Australian Open starts here, in a few minutes time. I hope you're all wide awake, especially if you've got an exam tomorrow...