Chelsea went five points clear at the top of the Barclays Premier League as they outclassed a wasteful Arsenal in a 3-0 win at the Emirates Stadium.
A Didier Drogba double strike and an own goal from Thomas Vermaelen handed the Blues their fifth successive league win and ripped up the Gunners' 100% home record.
Arsenal dominated the first half and had an Andrey Arshavin goal disallowed but they could not break down a determined Chelsea defence, and remain one place behind local rivals Tottenham Hotspur in fourth.
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