A second-half penalty from captain Pierre-Emerick Aubameyang gave a richly-deserved three points at Old Trafford - Arsenal first Premier League win there for 14 years. They were the more positive side right from the opening exchanges, snapping into tackles and closing down well, and much of the opening quarter of an hour they played in the United half.
Their first sight of goal came when the overlapping Hector Bellerin fizzed a low ball across goal, but it was just ahead of the sliding Pierre-Emerick Aubameyang at the far post. Despite their superiority in terms of possession, it was United who had the first shot on target when Mason Greenwood ghosted in at the far post to draw a smart low save from Bernd Leno. Arsenal kept driving forward. Alexandre Lacazette had the ball nicked off his toes inside the area when he was about to pull the trigger while Willian fired against the bar after a neat one two with Aubameyang. But the best chance of the half came late on Arsenal. Bukayo Saka then headed over from a glorious position in front of goal, set up by Bellerin's pinpoint cross. Aubameyang sent a shot just wide at the start of the second half before Thomas Partey brought a save from David De Gea with a fierce drive. Arsenal certainly deserved the lead when it came.
Arsenal had been knocking at the door and finally went ahead from the penalty spot. Bellerin was brought down in the area by Paul Pogba and Aubameyang strode up to tuck home from 12 yards and end a personal five-game scoreless run in the Premier League. Arsenal came under much more pressure in the final ten minutes and United hit the post late on when a Donny van de Beek shot cannoned off Mohamed Elneny and then the upright.