Every time the Gunners and Blues meet, there seems to be more at stake than a mere three points. And both sides knew exactly how significant this rivalry match was ahead of their clash at the Emirates Stadium.
As they so often have recently, Chelsea found a way to win. After dominating much of the match with tight marking and slick interplay, they capitalized on Arsenal's old defensive weaknesses to nick the two goals they needed for three points.
There's certainly a lot to look at in hindsight, so let's pick out eight things we learned from Chelsea's 2-1 victory.