Arsenal took the lead against Man Utd thanks to Nacho Monreal. It was Alex Oxlade-Chamberlain who made the goal though as he danced around several of the home side's defenders and slipped the Spaniard through on goal.
That lead only lasted three minutes though. Wayne Rooney goal on the end of an excellent ball from Angel Di Maria.
The winner came from Danny Welbeck. Antonio Valencia was majorly at fault, leaving his backpass to De Gea far too short.