Gunners overcome Hammers in tough Upton Park encounter.
Arsene Wenger picks up crucial three point haul.
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After a lively end to end first 40 minutes of this derby encounter it was Arsenal who edged into the lead with Winston Reid bringing down Santi Cazorla and the Spaniard then dispatching the penalty with aplomb.
Barely three minutes later Danny Welbeck doubled the away side’s lead, firing home after brilliant work from Alex Oxlade-Chamberlain
West Ham were back in the game when Cheikhou Kouyate scrambled home ten minutes into the second half.
Both sides went close in the frantic final moments of this feisty encounter though Wenger’s men hung on to the win that sees them leapfrog their opponents in the Premier League table.