Arsenal had lost each of their previous five matches against Chelsea, stretching back to Nov 2008, and were beaten 1-0 at Manchester United in their last Premier League match.
However, the poor run of form against direct challengers for the championship crown came to an end at Emirates Stadium on Monday night as Wenger's youngsters heaped more pressure on Chelsea manager Carlo Ancelotti.
Alex Song put the hosts ahead before half-time, with a quickfire double from captain Cesc Fabregas and Theo...