Manchester United striker Robin van Persie has scored to put the Red Devils 1-0 up against his former club.
The ex-Gunners striker scored a great header from a Wayne Rooney corner after just 25 minutes at Old Trafford.
The game was a close fought contest up until the Dutchman's goal at the Theatre of Dreams.
The Red Devils star celebrated in style after opening the scoring. David Moyes' side have now gone in at half-time with their 1-0 lead.
Watch the goal above!