Full time: Arsenal 0-1 Chelsea
Willian has the chance to seal it after Hazard fed him in down the inside right channel but he skews his effort horribly wide.
Fabregas breaches the Arsenal backline, threading a ball through for Remy but the Frenchman has drifted just offside. Five minutes of time added on.
Another half chance for Arsenal as Bellerin's cross is scuffed into the six yard area by Oxlade-Chamberlain where Flamini is again waiting. He can't get the right contact either though and Courtois makes a rather comfortable save in the end.
Ozil clips the free kick in and Courtois drops it under pressure from Koscielny. It gets away from the goalkeeper but a swarm of Blue shirts are on the loose ball and hack clear.
Arsenal win a free kick out on the right as Hazard almost leaps over Ozil trying to claim a high ball.
Arsenal have enjoyed a decent spell of possession over the last few minutes but there are still lacking that cutting edge. 10 minutes remain.
And here's another change for Chelsea with Eden Hazard on to replace Oscar.
Arsene Wenger has made his last change, bringing on Alex Oxlade-Chamberlain for the disappointing Walcott.
Mikel is shown a yellow card after sticking an arm out after miscontrolling a pass, catching Alexis right in the mush.
Oscar breaks the offside trap down the left flank and drags a pass back for Fabregas on the edge of the box. The Spaniard shifts the ball onto his right foot and has a shot from 25 yards out, but it's an easy save for Cech.
Chelsea might have a problem here, Diego Costa has picked up a knock. Loic Remy looked like he was about to come on anywya however and that hastens his arrival. Just over 20 minuted remaining.
That free kick causes havoc as Courtois fails to deal with it, giving Arsenal a couple of chances on goal but on each occasion a Chelsea body is across to block.
Alexis has immediately brought some urgency into his side, driving at Chelsea at every opportunity. Aaron Ramsey does likewise and wins a free kick out on the left.
Nemanja Matic picks up a booking after blocking Sanchez of the ball while he was running at full pelt. Pretty much identical to the incident where Fabregas was felled in the box moments ago.
Here he is; Alexis Sanchez has entered the fray, replacing Campbell.
Erm, how wasn't that a penalty?! Fabregas easily jinks past Flamini and drives into the box before he is clearly shouldered off the ball by Koscielny. No attempt to play the ball there.
Arsenal patiently stroke the ball around as they look to prise Chelsea open before Ramsey takes control, lofting a ball over for Walcott to run onto. Chelsea once again hold their line perfectly however and the offside flag goes up.
Chelsea remain firmly in control of this contest. Not for the first time today, Walcott's first touch lets him down as he tries to control a pass down the right.
Alexis Sanchez is continuing his warm up in the early stages of this half, surely it won't be long before we see him enter the fray.
And we are back underway for the second half.
Half time: Arsenal 0-1 Chelsea
The Gunners are a man and a goal down as we reach the half-way point.
What a chance for Flamini! Ramsey lifts a wonderful lofted pass into the box where again Flamini has popped up in loads of room. It's the wrong man in the right place again, however, as he gets his effort all wrong, scooping it well over the bar.