Willian provided two assists on his Arsenal debut as the Gunners eased past Fulham 3-0 at Craven Cottage.
Fulham gave Arsenal an early scare when Aboubakar Kamara drew a smart save from Bernd Leno.
Alexandre Lacazette opened the scoring on eight minutes, tapping in after Marek Rodak had pushed Willian’s shot to him. In so doing, the forward became the first player to score the opening goal of a Premier League season more than once.
Three minutes after the break, Willian, who also struck a post with a first-half free-kick, sent over a corner that was headed in by another debutant, Gabriel.
Pierre-Emerick Aubameyang collected Willian’s long pass to curl in Arsenal’s third on 57 minutes.
It gave Arsenal their biggest away league win since beating Fulham 5-1 in October 2018.
Fulham: 19 Sep v Leeds (A)
Arsenal: 19 Sep v West Ham (H)
Referee: Chris Kavanagh. Assistants: Daniel Cook, Sian Massey-Ellis. Fourth official: Kevin Friend. VAR: David Coote. Assistant VAR: Stephen Child.