The Gunners succumbed to defeat at Old Trafford.
It was a frustrating afternoon for Arsenal at Old Trafford and after Manchester City and Tottenham Hotspur both lost, Manchester United inflicted a similar fate on the visitors.
The 1-0 defeat was only the Gunners’ second of the season in the league and the first since their opening day loss to Aston Villa.
In what had been a great week for the north London team – after wins against Liverpool and Borussia Dortmund – this will be a bitter pill to swallow.
Here’s how fanatix rated Arsene Wenger’s men: