Arsenal's unbeaten record is no more after they lost 3-1 to Premier League rivals Manchester United at Old Trafford on Sunday.
The Gunners remain top of the table, yet their lead over champions Manchester City in second is just a point. Although Arsenal aren't being considered as title candidates, they can't afford to lose to many games if they want to break into the Champions League.
That has to be the minimum aim for manager Mikel Arteta this season, especially as he has one of the most expensive squads in the world. Arsenal will not want another season in the Europa League. Here are three of the biggest headlines from the Emirates.
