Good afternoon and welcome to our live coverage of today's huge game between Chelsea and Arsenal at Stamford Bridge. We'll bring you the line-ups in a matter of seconds...

Costa blazes over the bar from six yards, totally unmarked. But the flag is raised. Blushes spared.

SHOULD SEE RED! Welbeck is lucky not to be sent off for a rash, two-footed challenge on Fabregas. Just a yellow.

We'll have four added minutes at the end of this match.

Ozil's clever flick over the top of the Chelsea defence gifts Podolski with a chance to shoot at goal, but the effort is blocked.

Chelsea are now just running the clock down. Arsenal looking to attack with pace whenever they get a sight of the ball, but it's all very rushed. Wenger's men fighting to the last second, though.

Oscar, who could have easily been booked in the first half, does receive a yellow for a cynical foul on Podolski as Arsenal looked to counter.

Ozil has been very poor today, epitomised by poor control on the touchline. The ball runs out for a throw-in, and the home fans celebrate wildly.

Arsene Wenger makes his third substitution of the day, but it's too little, too late.

So, Jose Mourinho will extend his unbeaten run against Arsenal to 12 games.

Chelsea players and fans really enjoying themselves now. The Blues fans are in full voice, and their players are playing the ball around their own half with ease.

GOAL!! Diego Costa scores. Chelsea 2-0 Arsenal. The forward has been very quiet today, but he's given one chance and takes it. Fabregas spots his compatriot's incisive run, playing the ball into his path and through on goal. Costa takes one touch as he enters the Arsenal penalty area to flick the ball over the onrushing Szczesny.

CHANCE! Costa breaks, leading a Chelsea attack, and Hazard should do better. The Spaniard travels down the left, using his stength and pace to brush off the challenge from Chambers. He gets to the edge of the penalty area and spots the run of Hazard, who takes the ball in his stride before firing narrowly over the bar from the tightest of angles.

Arsenal playing with a bit more belief now. They've seen most of the ball in the last five minutes, and have the home side pinned back deep in their own half. Diego Costa is the only man upfield.

Courtois has been taken to hospital as a precautionary measure, but this is how the keeper suffered the injury from earlier.

It'll be no consolation if they come away from Stamford Bridge empty-handed, but it has been a much more gutsy performance from Arsenal, compared to the shambles of last season.

Strong words from Rohan Ricketts: