A new matchday experience, but the same old David Luiz for Arsenal, as their accident-prone Brazilian came on as a sub, blundered for a goal, gave away a penalty and got himself sent off.

Even by his standards it was a bizarre 25-minutes work and, for a man who is trying to negotiate a new contract, not exactly a great way of making his case.

Mikel Arteta had left him out of the starting XI but, with Granit Xhaka and Pablo Mari needing to go off injured early on, Luiz got his chance.

Arsenal were on terms for the first 15 minutes but it was largely one-way traffic for the rest of the evening.

Raheem Sterling opened the scoring shortly after half-time when Luiz hacked at a Kevin De Bruyne misplaced pass and inadvertently set-up the England forward. Sterling made no mistake.

Luiz then hauled down Mahrez as the former Leicester attacker got past him. Referee Anthony Taylor had no choice but to send him off. De Bruyne slotted the penalty away and the match was effectively over.

Phil Foden came on as a sub and tucked away the third, following up after Sergio Aguero hit the post.

It would have been an entirely satisfactory evening for the hosts had it not been for a nasty-looking injury suffered by Eric Garcia late on when he collided with Ederson.

At the start of the game, players had taken a knee for the Black Lives Matter campaign.