Premier League: Arsenal v Chelsea - in pictures

The Emirates looks resplendent in the Autumn sunshine. With both teams unbeaten, Arsenal were looking for a win to close the gap on league leaders Chelsea Photograph: Tom Jenkins for the Observer

Home fans walk over Remembrance Square as they arrive at the stadium Photograph: Tom Jenkins for the Observer

Remembrance Square is getting busy as kick-off approaches
Photograph: Tom Jenkins for the Observer

Chelsea fans show their support for John Terry after this week's FA ruling Photograph: Tom Jenkins for the Observer

With both teams unbeaten it's going to be a close affair as this clash between Carl Jenkinson and Ryan Bertrand demonstrates Photograph: Tom Jenkins for the Observer

Midway through the first half Mata curls in a free-kick from the right towards an unmarked David Luiz six yards from goal. He couldn't reach it but Torres beats Koscielny to the ball and hooks an outstanding improvised volley into the top-left corner to give Chelsea the lead Photograph: Tom Jenkins for the Observer

Eden Hazard runs into Mikel Arteta Photograph: Tom Jenkins for the Observer

With the home side being a goal down it's no surprise that the "Highbury Library" comes to the Emirates Photograph: Tom Jenkins for the Observer

Eden Hazard is tripped by Laurent Koscielny Photograph: Tom Jenkins for the Observer

Just before half-time Gervinho gives the home crowd something to sing about. Arteta finds Oxlade-Chamberlain on the right and his low cross comes to Gervinho eight yards out, Chelsea's centre-backs having dropped too deep. He has his back to goal and still has a lot to do, but he quickly controlls the ball and then swivels to crash a shot into the top-right corner in one movement Photograph: Tom Jenkins for the Observer

Three minutes into the second half there's an anguished cry and a hilarious leap through the air as David Luiz is challenged fairly by Gervinho. Martin Atkinson is having none of it, and books the Chelsea defender despite Luiz's claims that he wasn't really looking for a penalty Photograph: Tom Jenkins for the Observer

Petr Cech claims a cross Photograph: Tom Jenkins for the Observer

Laurent Koscielny fouls Oscar Photograph: Tom Jenkins for the Observer

The Professor ruminates on the touchline Photograph: Tom Jenkins for the Observer

John Terry organises his players late in the game with the use of gestures ... Photograph: Tom Jenkins for the Observer

Shouting ... Photograph: Tom Jenkins for the Observer

And pointing Photograph: Tom Jenkins for the Observer

Fifty two minutes in and Fernando Torres is tripped by Thomas Vermaelen. That earns Chelsea a free-kick and the Arsenal defender a yellow card Photograph: Tom Jenkins for the Observer

Mata curls the resultant free-kick deliciously into the corridor of uncertainty with his left and Koscielny, sliding in, only succeeds in confusing Mannone, who reacts too late as the ball bounces into the corner of the net Photograph: Tom Jenkins for the Observer

Let's see that own goal from another angle Photograph: Tom Jenkins for the Guardian

Fernando Torres Photograph: Tom Jenkins for the Observer

Now they're a goal behind again, glumness returns to the Arsenal fans Photograph: Tom Jenkins for the Observer

In injury time that glumness turns to despair as Giroud misses a sitter! Oxlade-Chamberlain slips him in behind the Chelsea defence with a glorious pass, and he takes the ball around Cech and then slices his shot into the side-netting Photograph: Tom Jenkins for the Observer

On the final whistle John Terry celebrates Chelsea's 2-1 victory with Ashley Cole and John Obi Mikel Photograph: Tom Jenkins for the Observer

Before taking off his boots to give to the Chelsea fans Photograph: Tom Jenkins for the Observer

The fans that received them are excited to have got their hands on them ... Photograph: Tom Jenkins for the Observer

Very excited! Photograph: Tom Jenkins for the Observer