Robin van Persie nets a hat-trick as Arsenal come from behind twice to secure a famous win at Chelsea, the 500th under Arsene Wenger and the first away from home in the Premier League this season for the men from North London. The Gunners went in at the break trailing 2-1, but turned the game on its head with goals from Andre Santos immediately after the restart and Theo Walcott on 55 minutes.
