Pierre-Emerick Aubameyang claimed a hat-trick, two of which came in a first half blitz that put the Gunners 3-0 up at the break, before Pascal Struijk and Helder Costa made the scoreline more respectable.
7. Stuart Dallas - 6
Couldn't get a grip on the game in midfield before the break. Was a big part of the urgency that allowed Leeds to make more of a game of it.
8. Mateusz Klich - 4
A couple of tidy moments aside failed to get into the game. Little impact. Had a shooting chance but was wildly wayward with it. Wasn't entirely fit but played anyway.
9. Raphinha - 5
Couldn't get into the game for a long time. Eventually started to cause a few problems but delivery and decisions weren't always spot on, defensively caught out a few times.
10. Jack Harrison - 5
One great cross and a chance he didn't take aside found it very hard going. Replaced at the break.
11. Patrick Bamford - 5
Allowed Gabriel out of troubled spots with silly fouls. Should maybe have had a penalty. Service to him wasn't good, chances were few and far between.
12. Tyler Roberts - 7
One of his better cameos this season. Some tidy touches and a nice assist for the goal.