Pierre-Emerick Aubameyang scored his first league goal since the opening weekend of the season as Arsenal edged out Manchester United at a rain-soaked Old Trafford.
The Gabon forward broke the deadlock from the penalty spot in the 69th minute after Paul Pogba had clipped the heel of Hector Bellerin in the area.
There were very few other chances.
Willian’s effort struck the bar, while a strike from substitute Donny van de Beek came off the post late on.
The Gunners now have 12 points and are up to eighth and United remain in 15th on seven points.