Robin van Persie scored two goals in three minutes as Arsenal shocked Chelsea at Stamford Bridge to hand the Blues their second home defeat of the season and give Arsenal their second win of the season against the Big Four.
After a Johan Djourou own goal gave Chelsea a first-half lead, the Blues struggled to get their shots on target, and Arsenal took advantage, led by the excellent Cesc Fabregas in midfield.
On 59 minutes, Van Persie looked to be offside, but the flag stayed down, and he slotted the ball past Petr Cech with his weaker right foot.
Three minutes later, Van Persie made it two, working through Chelsea's defense and sliding the ball in to send the travelling fans into delirium. Chelsea struggled to put anything together in the remaining half hour, and Arsenal held on for a season-saving victory, making fans wonder why Arsenal could lose to lesser teams when they've now beaten both Manchester United and Chelsea.