Arsenal suffered a major setback in their title challenge as they lost to Aston Villa at the Emirates Stadium.
Ashley Young had a first-half penalty saved by Manuel Almunia but then helped set up the opener when he crossed for Agbonlahor, who celebrated despite Gael Clichy appearing to get the final touch.
Agbonlahor then added the second 10 minutes from time when Villa broke, with Arsenal cancelling out the good work of last week when they beat Manchester United.
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