A Juan Mata free-kick handed Chelsea all three points at the Emirates Stadium, and Roberto Di Matteo’s side extend their lead at the top of the Premier League table.
The Blues took the lead through Fernando Torres, before Arsenal striker Gervinho equalised just before half-time. But a Juan Mata free-kick won the game for Roberto Di Matteo’s side.
The Spaniard’s effort clipped Laurent Koscielny on the way through and Arsenal keeper Vito Mannone was left helpess as the ball nestled into the far corner.
French international Olivier Giroud had a late chance to snatch a draw after coming on as a substitute, but the former-Montpellier striker skewed his effort wide after rounding Petr Cech.
After Branislav Ivanovic attracted criticism last week for diving, Chelsea defender David Luiz followed suit this weekend, and was booked for going down too easily in the second half.
But Roberto Di Matteo will be delighted to leave the Emirates Stadium with all three points, especially considering the Gunners solid start to the season. Arsene Wenger will be disappointed to have conceded from two set-pieces, and to make matters worse, Abou Diaby limped off with an injury in the first-half.
The 2-1 victory keeps Chelsea top of the table.