Phillips Idowu failed in his bid to claim another medal for Great Britain at the World Championships in Japan, finishing sixth in the triple jump.
But there was some great news on the track as Nicola Sanders and Christine Ohuruogu both reached the 400m final, setting personal bests on the way.
Andy Baddeley unleashed a sprint finish to reach the men's 1500m final too.
Ethiopian Kenenisa Bekele claimed his third 10,000m crown while Veronica Campbell took a tight 100m title.
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1440 : That is it for another day. Tuesday, we are back here bright and early again, when the men's 400m heats get under way and we'll find out how high Yelena Isinbayeva can go in the pole vault final. Roll on Wednesday I say for that women's 400m final.
1435 : Well actually here's the last word: "Unfortunately, Phillips Idowu is fit but not sharp and at his best yet. At the end of the day, it's the fourth top eight place for Britain, coupled with a medal, and there are two more guaranteed after Nicola Sanders and Christine Ohuruogu made the women 's 400m final in style. A medal beckoning there!"
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1432 : And the final word of the day goes to Veronica Campbell, winner of the 100m gold: "It was a nerve-wracking wait because it was a very close race and I didn't know who had won. But I've been focused on the gold and thank god I won it."
1430 : Silver medallist Williams tells BBC Sport: "A very agonising wait but I'm just happy I could get here and contend for my medal. I wasn't sure of myself and I'm glad I went all the way to the line with Veronica. I think I leaned a bit too early, otherwise I didn't know what had happened. I'm going to call it a tie. It's been a rough season so I'm excited by my performance."
1425 : The athletes are pacing around anxiously on the track and the celebrations can begin as Jamaica's Veronica Campbell is awarded the gold in 11.01 seconds. She is given the same time as defending champion Lauryn Williams, but gives the title on a photo finish. American Carmelita Jeter takes third, and favourite Torri Edwards is fourth.
1420 : Final action of the day, the women's 100m and it's a close, close race. Veronica Campbell looks like she might just have snuck it on the line from Lauryn Williams and we need a photo to sort this out. The arm of Williams crosses the line first but it has to be torso, and we're in for a bit of a wait here.
"This is an embarassment really, as they are putting things up on the scoreboard which just aren't right. The scoreboard has gone out now and thank goodness."
BBC commentator Steve Cram
1415: Just to update you on the triple jump, while Idowu finished down in sixth the gold went to Portugal's Nelson Evora (17.74m), from Brazil's Jadel Gregorio (17.59) and 2005 champion Walter Davis (17.33).
1407: Rounding the final corner, Bekele kicks on past his compatriot Sihine, and he pours away to claim his third straight world crown with a brilliant run, finishing in 27.05.90. Mathathi takes bronze. And that was one of the most exciting 10,000m we've seen.
"What a performance. Tadesse did all of the early work but you have to hand it to the great man. That's the first time we've seen him under that kind of pressure - another lap and he might have been broken. But it's his world title and it wasn't going to anyone else."
BBC commentator Steve Cram
1406: At the bell Mathathi leads but just round the bend here comes Bekele chasing down compatriot Sihine who is bidding for gold.
1405: Three laps to go and Mathathi takes the lead from Tadesse and drags Bekele and Sihine with him - but Tadesse is left behind. His brave run, over.
1404: There are five laps to go in the 10,000m and Tadesse continues to lead the race as the leading group is reduced to just four men. Bekele is on his shoulder in second with Sileshi Sihine and Martin Mathathi of Kenya close behind.
1400: Well it is game over for Idowu. He does improve with his final jump, landing 17.09m but it is not enough to challenge the leaders. World record holder Jonathan Edwards says: "Phillips will have to go to the drawing board and start again. I think the injuries caught up with him in the end."
1355: Halfway through the 10,000m now and Tadesse, who won the world cross country title in March, continues to lead with defending champion Bekele in third. The tactics of the race are quite interesting. Ethiopian Gebre-egziabher Gebremarian keeps trying to go to the front to slow down the pace - but Tadesse is having none of it, as he presses on.
1354: And time is running out for Idowu in the triple jump as he lands just 16.85m with his fifth attempt.
1352: More news. Eritrea's Zersenay Tadesse tries to take it on in the 10,000m. He is setting the pace through the first 3,000m. Here's Brendan Foster:
"You have to admire the courage of Tadese. He thinks he can test Bekele. He has led almost the whole way."
1350: "I've not long woken up and might be a bit confused but have I just seen two Brits win their semis in the 400m?"
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Your eyes are not deceiving you indeed, but in case you need convincing here's some words from the sage MJ.
"Sanders ran a very aggressive race, she got out well and then was able to relax. She won't be favourite for the final as she's not as experienced as some of the others in the final, but that will help her as she won't have the pressure on her.
Christine looked confident and ran an evenly-paced pace and well within her self. She is looking strong."
BBC pundit and five-time Olympic champion Michael Johnson
1341: The 10,000m gets under way on the track, and as Crammie says there is an awful long way to go - 24 laps or so. Meanwhile, Idowu has had his fourth jump and lands 16.88m. He stays in fifth - and he won't be happy with that.
1336: No sign of Ohuruogu after her race but Sanders stops trackside to tell the BBC: "I saw the clock when I crossed the line and I was really shocked. I'm really pleased but it's all about the final and this won't mean anything later."
1327: Ohuruogu continues her comeback from a one-year ban by cruising into Wednesday's 400m final with a personal best time of 50.17 seconds. It is the first time Britain has had two 400m finalists at the Worlds. The Brit tally is looking good at 2/3.
"Christine is getting quicker with every race - and she hasn't had many of them of course. She will be very pleased with that, she's in the final and has gone even quicker."
BBC commentator Steve Cram
1325: The hammer final comes to a conclusion - and it is another dramatic one. Belarussian Ivan Tikhon lands 83.63m with his final throw to wrap up a third world crown and steal gold. Primoz Kozmus is second with Libor Charfreitag third.
1320: A wonderful run from Sanders in the second heat. She wins it in an astounding personal best of 49.77 seconds. Russian Natalya Antyukh comes second in 49.93 with DeeDee Trotter third. So the Brit tally goes 1/2.
"A superb performance and at last sub-50 and showing the talent that she has. She had to run this as a final, she had to go all out. She goes third on the British all-time list. She knew she had to run the race of her life and she has delivered big style."
BBC commentator Steve Cram
1315: Three Britons are in action in the women's 400m semi-finals - the first two go through and the fastest two losers. So we have Christine Ohuruogu, Nicola Sanders and Lee McConnell to look out for. McConnell runs a season's best 51.07 but she comes home in fifth and will not advance. The heat is won by Novlene Williams (49.66) from Ana Guevara (50.19). Anyway, our Brit tally says 0/1.
1312: Straight on to another triple jump update then. Things are not looking good for the Idowu trophy cabinet. The Londoner can only manage 16.66m but there are some big, big jumps from his opponents. Portugal's Nelson Evora leads with 17.74m from Walter Davis (17.33) and Osniel Tosca (17.21m).
1302: Phillips Idowu is still looking a bit out of sorts. He manages to land 17.07m with his second attempt which is good enough for fourth. The top eight triple jumpers get to have an extra three jumps - so fingers crossed he can hang on.
1258: The second 1500m semi-final is a much more straightforward affair with defending champion Rashid Ramzi crossing the line first in 3:40.53. American Alan Webb, who has the world-leading time this year, sneaks through in fifth.
1245: Baddeley goes backwards down the back straight but the Briton benefits from a dramatic end to the race. There are two fallers down the home straight. Mehdi Baala knocks down Youssef Baba and he takes Daniel Kipchirchir Komen with him. All this means Baddeley motors round the outside and qualifies in fifth place with a time of 3:43.03. American Bernard Lagat wins the heat in 3:42.39.
"I've got a feeling there might be a bit of a protest. Baddeley is through because he didn't do anything wrong. He kept going until the line."
BBC commentator Steve Cram
1243: It is a fairly pedestrian heat this one and who is going to make the move? Baddeley holds on in third at the bell.
1241: The action is really speeding up now. Andy Baddeley is going in the first of the men's 1500m semi-finals.
1237: Um, a bit of a tentative start to the triple jump for Phillips Idowu. He can only reach 16.63m at his first attempt. Portugal's Nelson Evora takes the lead after landing 17.41m. It's early days though. Here's what Jonathan Edward thinks:
"Phillips just didn't have the timing and rhythm and that's because he just hasn't jumped at all."
1232: Back in the steeplechase - Samitova's pace-setting tactics came to nothing as she faded away while Russian compatriot Yekaterina Volkova comes through to take gold. It's a Russian one-two as Tatyana Petrova takes silver with Kenya's Eunice Jepkorir third. Volkova wins in a championship record time of 9:06.57 - the second fastest of all time. By the way, the graphic - that's the gold medal they're handing out in Osaka.
1230: ... and that's hammer time. Uh. No, seriously an update on the hammer final for you. Slovenia's Primoz Kozmus leads with his third-round toss of 82.12m ahead of Vadim Devyatovskiy and Libor Charfreitag. Japan's Koji Murofushi is fourth with a season's best 80.38m.
1223: There are a group of women out on the track jumping over barriers and ploughing through water as the 3,000m steeplechase gets under way. World record holder Gulnara Samitova-Galkina strings out the field with some early front running, but she slows down through 1,000m.
1213: In the second 100m semi-final, Veronica Campbell wins in 10.99 ahead of Christine Arron and Kim Gevaert, who both set season's bests.
1207: A bit of drama in the hammer. Slovakia's Miloslav Konopka topples over during his final spin and sends the hammer pinging through the side-netting and into the long jump pit. Watch out Phillips Idowu. The last thing we want is his chances being scuppered by a stray flying object.
1203: Well, Turner was run out of it there, and when you're up against favourite Torri Edwards it's pretty tough. Edwards wins the first semi in 11.02 seconds ahead of Lauryn Williams and Jamaica's Kerron Stewart. Turner finished seventh in 11.32.
The 25-year-old tells BBC Sport: "I wanted to make the final but never mind. I'm very disappointing with the time but I'm really enjoying being up there with the best in the world."
1200: First track action and Britain's Laura Turner goes in the first women's 100m semi-final - let's see how she goes on.
1158: "If Kenenisa Bekele deals with the conditions, unlike his performance at the World Cross Country, I can't see anyone coming near him. The triple jump looks like it could be pretty competitive, so it looks like it should be a great evening session."
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1150: Thoughts are already turning to the men's triple jump final and here's what the world record holder Jonathan Edwards thinks of his old rival Phillips Idowu's chances.
"All the history has shown that Phillips needs to land a big jump in round one or two, and if he doesn't then the alarm bells could start ringing. The field is wide open and, apart from American defending champion Walter Davis, there is a massive opportunity for Phillips here."
1140: The first live action has swung, almost literally, into action in the field as the men's hammer gets going.
A little story trickling over from yesterday:
Britain's bronze heptathlon medallist Kelly Sotherton has been speaking out against Lyudmila Blonska, who won the silver medal.Blonksa was competing in her first Worlds since serving a drugs ban. But Sotherton was focusing on her own plans this morning. The 30-year-old Briton told the BBC:
"I feel this is my last year at the World Championships in the heptathlon and my focus is now on improving my Olympic bronze in Beijing."
1125: Welcome to the third day of watching the world's finest track and field athletes run and jump and throw in Japan.
There is also a bit of hopping and skipping to keep an eye out for too in the men's triple jump final.
Britain's Phillips Idowu is looking for his first global medal and he reckons: "If I can stay relaxed then I can come down the runway with blistering speed and get a distance good enough to win it."
Laura Turner has done well to reach the women's 100m semi-finals but can she reach the last eight where American Torri Edwards and Jamaica's Veronica Campbell go as favourites?
Also aiming to progress in the 400m semis are Christine Ohuruogu, Nicola Sanders and Scot Lee McConnell.
But before all that, the biggest crowd yet is expected at the 50,000-capacity Nagai stadium to see local favourite Koji Murofushi, who carries Japan's best hopes of gold.
He is the reigning Olympic hammer champion but faces double defending champion Ivan Tikhon of Belarus. Expect ooohs and aaahhs and camera flashes galore.