It is time for us to bring Sportsday on this crisp Tuesday afternoon to a close. Remember to follow live text commentary of the League Cup semi-final second leg between West Ham and Manchester City on the BBC Sport website from around 1830 GMT, while there is audio commentary on BBC Radio 5 live sports extra.

Thanks, as always for your company and until the next time, goodbye.

Kamui Kobayashi reveals he is not being paid a penny by Caterham for his return to Formula 1 this season.

Caterham have confirmed Japanese driver Kobayashi and Swedish rookie Marcus Ericsson will form their driver line-up for the year ahead.

"I don't need or care about money. I just want to drive and help the team, to be successful in my life and to bring the team success," says Kobayashi. "I am racing for free, my decision, my approach because I want to do this job."

Goalkeeper Oscar Ustari goes straight into the Sunderland squad for Wednesday night's Capital One Cup semi-final clash with Manchester United after signing a short-term deal.

The 27-year-old Argentina international will remain at the Stadium of Light until the end of the season after he and Spanish club Almeria agreed to rescind his contract.

Graham Turner steps down as Shrewsbury Town manager.

"It's a very sad decision," says Turner. "It's a club that I've really enjoyed working at, it's a club that gave me my first opportunity in management so I'll always appreciate that and will always be close to the club.

"I thought I was the right man to get the results going and it hasn't materialised so I felt that there was a need for a decision to be made."

Infostrada Sports stats experts on Twitter:, external #AusOpen: Stanislas Wawrinka stuns Novak Djokovic, whose winning streak at AO is snapped at 25, one short of Andre Agassi's record of 26.

Image source, AP

Stanislas Wawrinka ‏on Twitter:, external "So NO massage for me tonight... They all left... Thanks guys... Great organization @AustralianOpen."

Wawrinka ended the three-year reign of Australian Open champion Novak Djokovic with a thrilling five-set quarter-final victory.

Sunderland manager Gus Poyet believes loan signing Santiago Vergini will suit the way he wants to play

Argentine defender Vergini has signed on loan until the end of the season.

"Santiago is a player I've been following for, I would say, nearly a year and a half," he told Sunderland's website., external

"The type of player he is, his age, his character and the way he plays suits the way we want to play."

Rob:, external Newcastle coming back from 4-0 down at half time to Arsenal, Tiote's equaliser quality!

Ollie Roper:, external Cheltenham 5-3 down at Burton after 87 minutes, came back to win 6-5.

Michael West:, external Dare I say it . . . Australia getting hammered 3-0 in the English Summer! 3 months later dismantle England to win 5-0.

Let us know your greatest sporting comebacks via #bbcsportsday or have your say on the BBC Sport Facebook page.

The key match in "Botham's Ashes" in 1981. There were odds of 500-1 against England midway through their second innings.

That was before Ian Botham struck 149 not out and Bob Willis took eight for 43 to pull off an unlikely win.

Image source, Getty Images

Ahead of tonight's Capital One Cup semi-final second leg, with West Ham trailing Manchester City 6-0, we are asking what for you is the best comeback in any sport? Let us know via #bbcsportsday or have your say on the BBC Sport Facebook page.

Caterham owner Tony Fernandes warns he could leave Formula One unless his team show significant improvement this season.

The Malaysian entrepreneur, who also runs Queens Park Rangers and the AirAsia airline, said: "If we are at the back, I don't think we're going to carry on.

"After five years and to get no points, there's a limit to everyone's patience, money etc."

Liverpool defender Sebastian Coates wants rejoin former club Nacional on loan as he battles to be fit for this summer's World Cup.

The 23-year-old has been out since tearing an anterior cruciate ligament in a knee while on international duty for Uruguay in August.

"It would be beautiful to join Nacional and complete my recovery in Uruguay with my family and friends," the centre-back told Radio El Espectador 810.

Huddersfield sign former IK Start midfielder Sondre Tronstad on a two-and-a-half-year deal.

Town have agreed a compensation package with the Norwegian side for the Norway Under-18 international.

Image source, Sunderland AFC

Goalkeeper Oscar Ustari signs for Sunderland until the end of the season.

The 27-year-old former Almeria stopper has made two appearances for Argentina.

Manchester United boss David Moyes will assess the fitness of strikers Wayne Rooney and Robin van Persie before finalising his starting line-up for the Capital One Cup semi-final clash with Sunderland at Old Trafford.

Rooney (groin) and Van Persie (thigh) have missed four and 10 matches respectively, but were due to return to training on Monday, leaving Moyes to decide whether to involve either player as United look to overcome a 2-1 first-leg deficit.

Blackpool confirm Paul Ince has been sacked, external as manager of the Championship side, adding that Barry Ferguson will take charge of training when the players return on Thursday.

Everton's on-loan Chelsea striker Romelu Lukaku, speaking before Nicolas Anelka's charge by the Football Association after making controversial "quenelle" gesture, backed the West Brom striker.

Speaking on Everton's official website,, external Lukaku said: "He shouldn't be banned for that. He just liked to support a stand-up comedian in France so we don't have to make such a big deal about it. He is an adult and for me I hope he doesn't get suspended because he's a player that people want to see play on the pitch."

As the build-up to the Six Nations gathers pace, our resident BBC Sport expert, Jeremy Guscott, discusses some of the issues you have raised this week.

The former England and Lions centre explains why he would drop England wing Chris Ashton, pick Simon Zebo for Ireland and retain Sam Warburton as Wales captain.

After the final round of Heineken Cup pool matches, Jerry also assesses which teams could buck the trend and win an away quarter-final, and whether an emerging European elite is good for the game.

Read more in his column on the BBC Sport website.

T Mark H:, external Best comeback? Liverpool 0-3 to Milan - Dead and buried. Fans left stadium. Wish I'd put a bet on at half time odds were huge.

Rob Quin:, external Enter Kevin O'Brien with Ireland 111/5 chasing England's 327, O'Brien & Ireland made history in the biggest World Cup chase ever.

Adrian Connolly:, external Boston Red Sox coming from 3 games down to beat NY Yankees 4-3 in 2004 playoffs. Never been done before.

Ahead of tonight's Capital One Cup semi-final second leg, with West Ham trailing Manchester City 6-0, we are asking what for you is the best comeback in any sport? Let us know via #bbcsportsday or have your say on the BBC Sport Facebook page.

Stoke City sign striker Juan Agudelo but immediately loaned the United States international to FC Utrecht.

The Potters were unsuccessful in their application to secure a work permit for the 21-year-old striker in November last year but have now decided to sign the youngster and loan him out ahead of reapplying for a work permit in the near future.

Image source, Getty Images

After losing the first seven frames of the world snooker final Dennis Taylor goes on to beat Steve Davis at The Crucible in 1985.

Taylor levelled the match at 17-all, and then won the deciding frame on a respotted black.

As West Ham attempt to recover from a 6-0 first leg defeat in tonight's Capital One Cup semi-final second leg against Manchester City, we are asking what for you is the best comeback in any sport? Let us know via #bbcsportsday, external or have your say on the BBC Sport Facebook page.