Mustafi headed in from a corner

Arsenal came in to the game looking to get a second consecutive win in the Premier League in what would be a dificult test.

Cardiff are known for using their physicality but it was Arsenal that took the lead through a direct goal.

Granit Xhaka swung in a corner from the left hand side of the pitch, and defender Shkodran Mustafi out-muscled his marker and headed the ball in powerfully.