Wilfried Zaha pirouettes on the ball near the touchline to race away from his marker. He has enjoyed this so far today and the away fans are singing his name.

Sheffield United made a number of changes for this game and they are still struggling to cause Preston many problems, instead it is Paul Gallagher who almost adds to his tally as he curls an effort just wide.

A bright start to the second half from League One Bradford. The game looked finished at 2-0, before Jon Stead's wonderful strike pulled a goal back at the end of the first half.

Phil Parkinson's side have also had the better of the second period, with James Hanson heading at Petr Cech, who also tips an effort from Filipe Morais over the crossbar. Not many sides come back from 2-0 down at Stamford Bridge. Can Bradford do just that?

Image source, Reuters

QPR goalkeeper Robert Green
Final score

"Chelsea have not created an abundance of chances but they looked really comfortable before they conceded. Perhaps they were their own worst enemy at 2-0 up, and Jon Stead fired Bradford back into it with an absolute howitzer. Perhaps the Chelsea fans are back on the edge of their seats again."

Scott Dann has three goals in his last two FA Cup appearances, admittedly one of those was in his own net, but he goes close to scoring another in the correct goal when he powers a header from a corner just over.

Shock o'clock! It's awful play between Fernando and goalkeeper Willy Caballero and Middlesbrough lead. Fernando cuts out a through-ball but then undercooks his backpass and puts Caballero in trouble. Caballero winces out of a clearance and is tackled by Albert Adomah, Fernando slides in to clear but can only kick it against Patrick Bamford and into the net.

The travelling Boro fans love that. Love it.

Image source, AP

Leicester are back on the hunt for an equaliser as Andrej Kramaric thumps a free-kick into the Tottenham wall, before Michel Vorm plucks Jeffrey Schlupp's shot from the rebound out of the air.

Middlesbrough keeper Tomas Mejias looks unbeatable today. He makes his seventh save of the afternoon to push out a header from Stevan Jovetic, before Vincent Kompany is booked. City not at their best,

Fulham midfielder Seko Fofana has the Londoners'' best chance of the day on a very rare attack, he squeezes in a shot from wide on the left which bobbles right across goal. Chance!

Birmingham are quick out of the blocks as Boaz Myhill has to be alert to parry away Lee Novak's rasping strike. West Brom are back defending at the moment.

Adam: Not sure where you've got that from James (see 15:58) Liverpool tickets for Chelsea are completely sold out for Tuesday.

QPR goalkeeper Robert Green
Final score

"We've seen end-to-end stuff at St Mary's - seemingly every shot either side has had has gone in. Southampton and Crystal Palace would both look at the teams left in the competition and think they still have a really good chance of going far if they can get through to the fifth round. All to play for there."

Image source, Getty Images

Conor McNamara
BBC commentator

"Long drive home"

Image source, Conor McNamara on Twitter

Southampton made one change in personnel at the break, with Matt Target on for Florin Gardos. Defender for a defender, is Saints boss Ronald Koeman looking to stop the flow of goals?

Mohamed Salah, a reported target for Roma, tricks his way down the Chelsea right before teeing up Loic Remy. The ball takes a tricky bounce and he has to try to scoop it in from the edge of the area, and puts it just wide.

Sunderland and Fulham are back under way, and the rest of this afternoon's games will soon follow suit. Where's the story?

Goonerama:, external Crystal Palace - where goalless Arsenal strikers go to score.

Wycombe and Burton, the top two, are both being held 0-0 at the break while third-placed Shrewsbury have been pegged back at 2-2 by Stevenage.

At the foot of the table, it's nip and tuck on Ronnie Moore's return to the Wirral with Tranmere and back-markers Hartlepool locked at 1-1.

Manchester City had 13 shots in that first half without finding the net. A matter of time?

Image source, Getty Images

Brandon, Bradford: Honestly think the worst thing Bradford could have done before half-time is score. Chelsea will now be urged to find blood in the second half.

Mark: It's silly season at St Mary's, Saints are not playing at their usual controlling level, making for a cracking game.

James, London: Bradford have taken 6,000 to Stamford Bridge today. Liverpool were given 4,100 tickets (for Tuesday) and didn't sell out.

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