To get involved use 606 or text us your views & comments on 81111. (Not all contributions can be used)
By Jonathan Stevenson
2207: That's a wrap. So we know the first Carling Cup finalist, but who will be the second? Burnley v Tottenham plays out tomorrow, so see you then. Meanwhile, get involved in Danny Baker's 606 on BBC Radio 5 Live right now and if tennis floats your boat, Piers Newbery will be here from around midnight with day three of the Aussie Open. Nice one.
2203: No surprise really that United's players are bossing it on Player Rater right now, with Carlos Tevez leading the pack on 7.72 and Nani close behind him with 7.60. Derby's super-sub Giles Barnes, who will surely be eyeing a start against Nottingham Forest in the FA Cup on Friday, is catching Tevez after his stunning cameo - he's already got 7.62. Keep voting... Rate the players
2158: "It's a Man Utd victory which we all expected and at the end of the day they are very worthy winners. Derby's penalty brought them back into it briefly, but United more than deserved to win overall." BBC Radio 5 Live's Graham Taylor
2156: Man United will play in the Carling Cup final on Sunday, 1 March at Wembley Stadium. They've beaten Derby 4-3 on aggregate. The night ends on a sour note, though, as Anderson is stretchered off.
2154: Full-time Manchester United 4-2 Derby County
2151: GOAL Manchester United 4-2 Derby County
He's brilliant, isn't he? No wonder when he's fit he's linked with so many Premier League clubs. Derby get a free-kick 25 yards out, left of centre, and Giles Barnes swings it quite magnificently up and over the wall and into the bottom right-hand corner of Ben Foster's net. A quite superb set-piece goal.
2150: There will be four minutes of stoppage time, for what they're worth.
2149: Great penalty that, into the side-netting - not many keepers in the world would get close to it. We're just about to enter injury time at Old Trafford.
2147: GOAL Manchester United 4-1 Derby County
You can't argue with that much. Some lovely United passing outside the Derby box ends with Carlos Tevez being played into the Rams area and Roy Carroll slides into the Argentine, clearly bringing him down, the keeper picking up a booking. Cristiano Ronaldo puts the ball in the net and that is that.
2146: PENALTY TO MANCHESTER UNITED
2146: "I'm proud of our boys tonight, we've dug deep since half-time and we still have a chance!" Emmet, Derby fan, via text on 81111
2144: To clarify, if Derby score again, we will go to extra-time. If at the end of extra-time it ends 3-3 on aggregate, then Derby go through to the final on away goals.
2143: Oh my. Robbie Savage swings over a free-kick from the Derby right and Giles Barnes has a free header, but it's a long way out and he can only direct it into the arms of Ben Foster.
2141: As my colleague so rightly points out, what a great week for Giles Barnes. Not only has his unwanted Premier League record of 21 games without a win been equalled by Gareth Bale, but he's gone and bagged at Old Trafford, too.
2140: United go straight up the other end and Cristiano Ronaldo should score, but his effort is straight at Roy Carroll, before Nani's shot from the rebound is pushed away by the Rams keeper.
2139: GOAL Manchester United 3-1 Derby County
Jonny Evans really is struggling, he brings down Paul Green in the United box and it's a stonewall penalty. Giles Barnes, who has just come on, tucks it into the corner of the net.
2138: PENALTY TO DERBY
2137: Carlos Tevez slides in Cristiano Ronaldo and the assistant's flag goes up straight away - wrongly, because it was a fabulously-timed run. Must really, really annoy footballers, that.
2135: Any Derby fans at Old Trafford fancy texting your thoughts on 81111?
2133: Jonny Evans is struggling in a massive, massive way. He's hobbling on his right ankle and there is little point him continuing - though United have used up their three subs. Meanwhile, Paul Green heads Paul Connolly's excellent cross from the right over the bar. He should have scored.
2131: Cristiano Ronaldo lets fly from 30 yards but he doesn't get it cleanly at all and the ball trickles into the path of Roy Carroll.
2129: Apparently, Cristiano Ronaldo was given the armband by Gary Neville when he was taken off. But Ronaldo passed it straight on to John O'Shea. Wonder why?
2127: A Derby corner from the right is not defended properly by United and the ball falls for Paul Green to rifle a volley over the crossbar. Kris Commons is taken off and Giles Barnes, who has had some horrible luck with injuries, comes on.
2126: Gary Neville is taken off by Manchester United and young James Chester - a local lad, I'm told - comes on for his first appearance in a Red Devils shirt. John O'Shea is the new captain.
2124: Carlos Tevez fastens on to Anderson's 30-yard pass and his right-foot shot is deflected over by Miles Addison. United are playing keep-ball at the moment.
2122: Jonny Evans is stretching and can only head a long ball into the United box into the air, it falls for Kris Commons but it's barely even a half-chance and the former Forest flier can only scuff it towards Ben Foster.
2121: Kris Commons has suffered an injury and needs a bit of treatment. Looks like a nasty gash on the Derby midfielder's shin, which is being wrapped up by the physio. Nacer Barazite, meanwhile, comes on for Andy Todd. Commons is OK to continue.
2120: "Derby have nothing to lose now, they should just go all-out attack." billysaintsfcc on 606 Join the debate on 606
2118: Kris Commons sends Rob Hulse away down the Derby right and the big striker's cross is magnificent, a horrible one for a defender to deal with, and Gary Neville somehow squeezes the ball away to safety.
2117: World Player of the Year Cristiano Ronaldo comes on for Ryan Giggs, who has been top quality all evening. What a substitution.
2116: "See 2057. It was my brother's birthday today. He was (a seven-breaking) eight. Does that help?" William, London, via text on 81111
2115: Danny Welbeck steals the ball ahead of Paul Connolly after Andy Todd's poorly-directed pass, but the youngster goes down and it comes to nothing. But Derby really cannot afford to be gifting possession away so easily.
2112: Silly boy. Andy Todd gives the ball to United and Nani slips in Carlos Tevez to score, though the Argentine's celebrations are cut short as he is flagged offside.
2111: Better from Derby. Paul Green fires in a great cross from the right that Jonny Evans can only scoop into the air and then Evans, slightly panicked, misses his header, only for another United defender to eventually clear.
2110: "C'mon Derby. Please don't defend on the edge of your six-yard box with all your players. Have a go." hansandersen on 606 Join the debate on 606
2109: Ryan Giggs rolls back the years to curl the ball over the bar and towards the top corner, but Roy Carroll scrambles across his goal to turn it behind.
2108: Nani skins his man just outside the Derby box and as he is about to shoot Robbie Savage clips his heels. No malice in it, but it's a free-kick for sure.
2106: Cristiano Ronaldo is going through his warm-up on the touchline.
2104: We're massively back under way at Old Trafford. I'm sticking by my predo of 3-0, incidentally.
2104: Robbie Savage comes on for Steve Davies for the second half for Derby.
2102: Worth mentioning that Doncaster are well on the way to playing Aston Villa in the fourth round of the FA Cup, as they are leading Cheltenham 3-0 in their third round replay thanks to a brace from Brian Stock and another from Sam Hird. Live text - Doncaster v Cheltenham
2059: "When Carlos Tevez becomes a player for the Carling Cup you know you have depth in your squad." Siddy, Wembley, via text on 81111
2057: It's the news everyone was hoping to hear, even Barack Obama, I'm sure. Danny the Stat is back: "No great surprise to see Man Utd's players enjoying a comfortable lead over Derby on Player Rater as well as on the field. Nani heads them with a seven-breaking (I'm beginning to wonder if it will catch on) 7.51, ahead of Ryan "7.15" Giggs and Carlos "7.13" Tevez. Kris Commons is the only Derby player to make six or more. Don't like it? Vote - Player Rater is a democracy, you know..." Rate the players
2054: Don't forget, Danny Baker will be taking your calls on BBC Radio 5 Live on 606 at 2200 GMT. He'd love you to get involved, so don't let him down. Read his latest chat right here, too... Join Danny's debate on 606
2050: "It's been a one-sided game after the first 15 minutes. United have just shown they are a better side than Derby and the Derby boys have found them too difficult to handle. You can see the wide gap in ability between these two teams." BBC Radio 5 Live's Graham Taylor
2048: Half-time Manchester United 3-0 Derby County
2047: Carlos Tevez scampers past Paul Connolly down the United left, but his cross is a touch too strong and Ryan Giggs cannot quite keep it in at the far post.
2044: Steve Davies runs past Darren Fletcher, who is playing at right-back, but Gary Neville gets in a fine tackle to halt his run just inside the United box.
2042: Kris Commons curls the ball up and over the wall and up and over the crossbar. Meanwhile, Rafael goes off with an injury and Darren Fletcher comes on in his place.
2041: Gary Neville is tugging the shirt of Steve Davies on the edge of the United box and it's a free-kick to Derby, 25 yards out. Kris Commons is interested.
2040: "It's times like this that I question the players' motivation. Such hype, such hunt for glory - and 3-0 in the first half?" Sinspaw on 606 Join the debate on 606
2038: This is getting ludicrous. Rafael plays a gorgeous one-two with Ryan Giggs, who has played a few in his time, and the Brazilian races into the box, only to slice his shot into Roy Carroll's side-netting.
2037: "It's very difficult to see how Derby can get themselves back into this game. It would be quite incredible if they did." BBC Radio 5 Live's Graham Taylor
2034: GOAL Manchester United 3-0 Derby County
Danny Welbeck latches on to a long ball forward and Roy Carroll hesitates, Derby eventually clearing their lines. But Ryan Giggs plays the corner to Rafael, his cross to the far post finds Carlos Tevez unmarked and the Argentine heads into the net from three yards. That is very, very bad defending.
2033: Steve Davies does exceptionally well to skip past Rafael down the Derby left, top wing play, but with players streaming forward he hits his cross miles over everyone.
2030: United are attacking incessantly now, seeking a third goal to kill the game off. Anderson, who has never scored for United would you believe, lashes a left-footer a few yards wide from outside the box.
2028: Danny Welbeck tries his luck from 25 yards, but the youngster's crack hits Andy Todd. Moments later, Nani's cross is volleyed into the ground by Welbeck from six yards, with Roy Carroll tipping the ball over the crossbar.
2027: "Game over." John, sad Derby fan, via text on 81111
2024: Nigel Clough looks pensive. He's got his legs on the chair in front - I hope he doesn't take that behaviour on to public transport. Robbie Savage, sat next to his gaffer, looks the other way.
2022: GOAL Manchester United 2-0 Derby County
Carlos Tevez plays the ball to Danny Welbeck on the edge of the Derby box and his first-time pass finds Gary Teale trying - hopelessly - to play offside, but the ball falls to John O'Shea and he keeps his cool to take a touch and slot in from 15 yards.
2020: "What a goal! I don't know why everyone's been criticising him this year, he's hardly had any chances this season compared to last time. He can really strike some long-rangers!" gunner-zp on 606 Join the debate on 606
2018: That ball dipped an alarming amount just before it reached Roy Carroll - he probably thought he had no chance of saving it until the last second. Cracking hit from a man really under pressure for his place, with the arrival of Zoran Tosic.
2016: GOAL Manchester United 1-0 Derby County
Stunning. Nani picks the ball up just inside the Derby half towards the left, drifts inside as the space opens up for him and unleashes a rocket shot which flies towards the corner of Roy Carroll's net. The keeper gets a good hand on it, but it sails in anyway.
2015: Derby have started really well here. It's got a bit scrappy after a lively opening, and you'd have to think that will help the visitors more than United.
2012: "That was a shocking foul on Neville but I can't believe he stopped like that to remonstrate and let the player get away!" collie21 on 606 Join the debate on 606
2010: Gary Neville, what are you doing? He loses the ball to Jordan Stewart, moans to the ref instead of playing on, then tries to take out Stewart as the left-back scampers past him. Woeful stuff.
2008: Ryan Giggs sends over a looping cross from the right that Roy Carroll has to claim while back-pedalling furiously.
2007: Kris Commons show exactly what he is all about. Rob Hulse finds him just inside the United half, he races forward and from 40 yards hits a sizzling left-footer that just curls a couple of feet wide of Ben Foster's right-hand post. Brilliant effort.
2005: Danny Welbeck's had an interesting start. He's mis-controlled the ball twice and been given an early reminder that Andy Todd is marking him, to boot.
2004: "If Derby get an early goal and get 11 men behind the ball, United will be hard pushed to get three goals - so this certainly isn't a formality." Andy, north London, via text on 81111
2002: Rafael shows some pace down the right to sprint past Jordan Stewart, but his cross is wayward and into the side-netting.
2000: Kris Commons and Rob Hulse get us under way in Manchester.
1958: News just in: Wigan midfielder Wilson Palacios has had a medical at Tottenham ahead of his proposed transfer to the London club. The fee? Around £14m. Football, eh?
1957: Nigel Clough and Paul Scholes share some banter in the tunnel, before the teams come out at Old Trafford. We're not far away from kick-off now.
1955: There are around 9,000 Derby fans at Old Trafford tonight. They will be making an awful lot of noise, too, as they try and roar their heroes on to an unlikely victory. Remember - it is 63 years since Derby reached a major cup final.
1952: Make no mistake, Fergie will want to win this one. He's won everything there is to win, but he's only bagged two League Cups during his astonishing United career. As he looks across to the opposition dug-out tonight, he'll probably be aware that Cloughie's dad bagged four in his day. That was when everyone wanted to win them, too.
1949: "Any other United fans terrified by seeing Neville at centre-back again? Ferguson thought he played brilliantly there last time, I thought he was abysmal. Here's hoping I'm wrong." BenchesterUnited on 606 Join the debate on 606
1946: "We know we're 90 minutes away from the final, but we're going to do an awful lot of defending tonight and we'll have to do it well. I want the players to relax and not be over-awed by it. They shouldn't need too much incentive for this one." Derby County manager Nigel Clough
1943: "Just arrived at OT, should be called OTT the number of Muppets taking photos of it. Freezing my centre-forwards off waiting for my brother on a bus from Derby. Get a move on brethren! I can't take these tourists or the cold much longer!" Super Simon, Super Derby fan, via text on 81111
1940: So, Ben Foster makes only his third appearance of the season, and his first since 3 December, in goal for Manchester United, in one of six changes by boss Sir Alex Ferguson from Saturday's win over Bolton. Nani, Darron Gibson and Ryan Giggs join Anderson in midfield and Rafael is at right-back.
Derby make four changes from the side that suffered a disappointing weekend defeat by QPR, with Gary Teale and Steve Davies returning to the starting line-up along with Paul Connolly and Jordan Stewart, who are back after suspension.
1939: MANCHESTER UNITED v DERBY COUNTY LINE-UPS Man Utd: Foster, Rafael Da Silva, Neville, Evans, O'Shea, Nani, Gibson, Anderson, Giggs, Welbeck, Tevez.
Subs: Kuszczak, Ronaldo, Tosic, Scholes, Fletcher, Possebon, Chester. Derby: Carroll, Connolly, Albrechtsen, Todd, Stewart, Teale, Addison, Green, Davies, Commons, Hulse.
Subs: Bywater, Savage, Villa, Barnes, Nyatanga, Barazite, Hines. Referee: Mike Dean (Wirral)
1937: "We're treating it as a semi-final second leg. We want to get to Wembley, it's that simple. The first leg was disappointing, so tonight on our own ground, we expect to do the basics better. This team was always going to play." Manchester United boss Sir Alex Ferguson
1935: By the way, there's an FA Cup third round replay tonight as well, as Doncaster take on Cheltenham for a place in the fourth round against Aston Villa. Derby play in the fourth round on Friday, though I can't quite remember who they were drawn against... Live text - Doncaster v Cheltenham
1933: "It's a long, long time since Derby have been to Wembley," says new Rams boss Nigel Clough. Ignoring their Championship play-off final win against West Brom in May 2007 (and a couple of other non-major finals), he's right. The Rams last appeared in a major final in 1946, when they bashed Charlton 4-1 after extra-time. Derby had the genius Raich Carter in their ranks that day, one of my granddad's favourite footballers ever (yes, despite that, he is a Forest fan).
1930: Stevo's Predo:
Manchester United 3-0 Derby County
1928: "Let's get some common sense involved with this Manchester City thing. Spending £100m on one of the best players in the world? Come on. Build your team up gradually, that's the only way to do it." BBC Radio 5 Live's Graham Taylor
1926: "Perhaps a mention for Sir Matt Busby, on the 15th anniversary of his death today? I'll go for a 4-0 United win, our defence is rock solid right now and it would take something special, like Commons from the first leg, for Derby to score. Their best hope is for a 0-0." Chris, United fan, via text on 81111
1922: Young Nigel has not wasted any time slaughtering his players, after their 2-0 home defeat by QPR on Saturday. "The lads at Burton were better at doing certain things," said Clough. "No player in the lower leagues would have made those basic mistakes on Saturday. I have been in a state of shock for the last 48 hours." Has he gone too early, or is this the first sign of classic Clough psychology? Derby 0-2 QPR
1918: "I say 3-0 to United, but the team I'm seeing I don't believe are capable of that. And if we lose then I'll get laughed at by tons of people at school, made worse by the fact I'm in Derby." Kezza, Man Utd fan, via text on 81111
Perish the thought, but maybe you should support Derby?
1915: "Even as a United fan I have to say I feel slightly torn tonight. If United win this tournament after a week or two it'll be largely forgotten. On the other hand, the thought of watching a Clough lead out Derby at Wembley is enough to stir some emotion in any football fan." Desolation_row on 606 Join the debate on 606
1911: So, where's your money? Will United's kids run Derby ragged and seal their place in the first showpiece event of the season? Or can the Rams belie their woeful league form once again and hold on to their slender lead to reach the final? Tell me, by texting on 81111, and getting involved in the debate on 606. Otherwise, I'm not going to know, am I? Bonus points if you're at OT tonight, too. Join the debate on 606
1908: I'm hearing that Gary Neville plays at centre-back tonight and Carlos Tevez and Danny Wellbeck play up front for Manchester United. New boy Zoran Tosic is on the bench. Paul Connolly and Jordan Stewart are back for Derby. Full teams as soon as we have them.
1907: But back to football. Tonight, it's David v Goliath II, as world champions Manchester United host the 20th best team in the Championship, Derby County, in the Carling Cup semi-final second leg at Old Trafford. David, in the shape of Kris Commons' 25-yard belter in the first leg at Pride Park two weeks ago, has the advantage, with Wembley awaiting the victors. Derby 1-0 Man Utd
1904: Of course it would be inappropriate for me not to mention the big news outside the world of sport today (yes, that world exists. I'm surprised too) - the inauguration of Barack Hussein Obama as the 44th president of the United States. Truly monumental times to be alive, aren't they? Check out the coverage our news crew have put together - immense. Historic moment as Obama sworn in
1900: Today is a day that history will never, ever forget. For eternity, Tuesday 20th January will be inextricably linked forever with hope, freedom and justice. A lone voice speaks out, a principled and honest man standing up for what he believes in. The world looks forward to a brighter future.
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