Tony Pulis’s West Brom lost yet again to Arsenal at the Emirates to make it 10 away lost at the Emirate stadium.
Arsenal’s Alexis Sanchez and Alex Lacazette started a premier league match together for the first time and the combination proved productive even in Mesut’s absence.
Lacazette’s first goal came from a Sanchez free kick, where all he had to do was head home a rebound from keeper Ben Foster.
The second goal came in the second half when Aaron Ramsey was tripped just inside the box and Alexander Lacazette didn’t hesitate to score Arsenal’s 100th league penalty and thereby wrapping up the victory.
Arsenal will now turn their attentions to Thursday’s Europa League trip to Belarus, where they will meet BATE in their second Group H match.