15:09
8 mins: Is that a penalty????
This is a bit scrappy. Willian loses the ball to Coquelin in a really dangerous position, but the Brazilian, to his credit, wins the ball back.
The ball then ricochets off the referee who, in a seeming fit of panic, awards Chelsea a free kick - no hint of a foul there really.
Moments later, Cesc Fabregas is clattered in the box by Per Mertesacker. Surely that's a pen? Nothing given...
The ball then ricochets off the referee who, in a seeming fit of panic, awards Chelsea a free kick - no hint of a foul there really.
Moments later, Cesc Fabregas is clattered in the box by Per Mertesacker. Surely that's a pen? Nothing given...
15:04
3 mins: Chelsea settling in
After that early sacre, Chelsea have assumed an early measure of control. Loic Remy is caught offside looking to get in behind before the Frenchman looks to force a mistake out of Hector Bellerin.
The champions on top so far.
The champions on top so far.
15:01
1 min: Gunners come out firing
What a start! Theo Walcott pinches the ball off Nemanja Matic straight from the kick off, and Arsenal break.
Alex Oxlade-Chamberlain crosses, but Courtois punches away. Blistering.
Alex Oxlade-Chamberlain crosses, but Courtois punches away. Blistering.
Source: DailyMail
Kieran Gibbs wins the ball high up the pitch, feeds Cazorla and gets it back after a brilliant pass. But the big Belgian denies him, one-on-one. What a save.
Jose Mourinho stands, hands on hips, as Cazorla lines up the free kick - which hits the wall and is deflected out for a corner. Arsenal won't mind this.
A game of pinball in the Arsenal box, but Mertesacker isn't going to lose too many battles in the air, at least not legally. He is fouled, and Arsenal calm it all down.
Four minutes of stoppages.
The referee has to charge in to separate them, which is unusual for a game like this. But it simmers down quickly enough.
From the free kick Ivanovic heads wide, he was offside anyway.
Chelsea clear though, and the focus returns to the other end of the pitch.
Arsenal's Czech goalkeeper Petr Cech makes a save but he hasn't been over-worked
The former Manchester United striker dives at the ball, makes contact with his head - and it goes away from the goal. Not easy, but that was poor.
A couple of substitutions as Ozil and Terry are replaced by Gibbs and Moses.
The delivery is poor though, and Chelsea only have 10 minutes to find a way through what has been a fairly organised red defence.
Alex Oxlade-Chamberlain is about to go off, with Mikel Arteta replacing him, but not before he works Thibaut Courtois from the edge of the box. Easy enough for the big Belgian though.
Kurt Zouma then tests Cech with a header, but the Arsenal keeper holds it well.
Over the bar though, that could easily have been a second for Arsenal, who look so good on the break.
Kurt Zouma is on for Chelsea amongst all that. Not quite sure how he'll fit in, replacing Azpilicueta.
It's a dangerous place for a free kick, with Oscar over the ball...
He tears past Azpilicueta, nips the ball past Matic, before the Spanish full back gets back to bring him down. He is rightly booked.
Giroud then goes close to scoring with his first touch, arriving at the back post but firing over on the stretch.
He won't have long to wait though, because the French striker is being readied. He comes on for Walcott
Cesc Fabregas opens up his former club's defence with a lovely slid ball to find Hazard, in the box, just to the right of centre.
The Belgian, through, one on one, slips as he shoots, skying the ball miles over. Shocking miss. Should have been 1-1.
He brings it down, but the first touch isn't quite good enough, and Koscielny gets back to nudge him aside.
Oscar then shoots from 30 yards. Scuffed, all along the floor, and well wide.
Falcao, meanwhile, takes over from Remy in the 'get caught miles offside' game.
Ozil and Cazorla link brilliantly in front of the Chelsea defence, but the ball through for Walcott doesn't quite come off.
Coquelin then almost puts Ozil in behind. Slightly too heavy with the pass, otherwise the German was in.
He runs past Azpilicueta but, with Walcott offside, Matic can come across to snuff out the attack.
At the other end Falcao tries a first shot, but it's blocked.
Cech does really well to claim the cross low down.
Will this be the Falcao of Manchester United? Or the man we knew before?
The cross is dealt with though, and the half-time whistle sounds. The Gunners lead the champions at the break.
A whipped free kick deflects of Per Mertascker and into his keeper's waiting arms.
If the French striker isn't replaced it's a real indication of where Radamel Falcao stands.
Ok, that might be an exaggeration - he's kicked the ball a couple of times - but he has it in his hands for the first time as Cesc Fabregas gets a cross all wrong.
Arsenal break quickly, and they should score, but Oxlade-Chamberlain's touch is too heavy when they have four men forward. He still manages to cross, but it's a dinked effort and Ivanovic clears, even as he is fouled.
Cazorla is beginning to dictate things a little, a delicious volley opening up some space, before a cross makes Chelsea's defence look uncharacteristically disorganised.
Aaron Ramsey - who has a good record at Wembley in terms of goalscoring - tries his luck from a tight angle, but hits the side netting.
The Brazilian midfielder meets it, six yards out, unmarked, but blazes the header over. A sitter. Mourinho looks furious.
He bursts past a defender on the break, but then, with three breaking alongside him, the pass is poor. Aaron Ramsey salvages the situation but by the time it reaches Oxlade-Chamberlain Azpilicueta is back.
At the other end Chelsea have improved - though not so much that they've managed a shot on target yet. Hazard and Remy combine nicely but the Frenchman can't return it to his Belgian team-mate in the box, Willian tries a cut-back but it's intercepted, and then Ramires curls one wide from 25 yards.
Better
Mesut Ozil, on the other hand, is just beginning to tick, picking the ball up deep, driving forward and almost finding Walcott with a dainty chip into the box. Well defended though.
Not a nice tackle for a game like this, to be honest, but Arsenal almost punish Ivanovic, with Walcott heading the free kick powerfully at goal. That's the first shot on target, but comfortable for Courtois.
Loic Remy is caught offside for about the 19th time already, before Walcott runs at, and past Ivanovic. He goes down in the box, but not much of an appeal.
Ramires chops down Ozil again, this time a free kick is given. This is scrappy stuff.
Gary Cahill is also down, he slid in hard a few moments ago to stop Nacho Monreal bursting from left back, and clattered his own man Willian. Blood coming from the nose...
When they have some possession, Ramsey passes it straight out of play. Wasteful.
Aaron Ramsey is playing alongside Francis Coquelin today. A sign of things to come, perhaps?
Azpilicueta the latest man to have a go at the full back, Chelsea dominating so far.
Bellerin blocks the cross, and the corner comes to nothing.
15:10
That's a spot-kick for me.