The early sending off of Manchester City's Dedryck Boyata proved decisive as Arsenal took advantage and eased to a 3-0 win against their title rivals at Eastlands. Within five minute City had a mountain to climb as Boyata brought down Marouane Chamakh as he threatened to break clear on goal.
The Gunners took the lead on 20 minutes through Sami Nasri and should have doubled their lead but Cesc Fabregas saw his penalty saved by Joe Hart.
City desperately tried to get back into the game but the visitor's finally extended their lead when Alex Song finished skilfully just after the hour.
The Gunners continued to dominate and sealed an emphatic win with a two minutes remaining when Nasri turned provider for Nicklas Bendtner to slot home.
This result puts Arsene Wenger's team up to second place in the Premiership on goal difference.
Man City scorers: Arsenal scorers: Nasri 20, A Song 66, Bendtner 88
Referee: Mark Clattenburg
Venue: Eastlands Attendance: 47,393
MAN CITY 25 Hart 02 Richards 04 Kompany (yellow card) 17 Boateng 38 Boyata (red card) 07 Milner 18 Barry (yellow card) (Balotelli 72) 21 Silva 34 De Jong 42 Yaya Toure (Bridge 46) 32 Tevez (Adebayor 52)
Substitutes 01 Given, 03 Bridge, 19 Lescott, 11 A Johnson, 24 Vieira, 09 Adebayor, 45 Balotelli
ARSENAL 21 Fabianski 03 Sagna 18 Squillaci 20 Djourou (yellow card) 22 Clichy 04 Fabregas (yellow card) (Walcott 85) 08 Nasri 15 Denilson (yellow card) 17 A Song (yellow card) 23 Arshavin (Rosicky 70) 29 Chamakh (Bendtner 84)
Substitutes 53 Szczesny, 06 Koscielny, 27 Eboue, 28 Gibbs, 07 Rosicky, 14 Walcott, 52 Bendtner