Uruguay international Lucas Torreira featured in the win.
He only started training with his new club on Monday after helping his country to the World Cup quarter-finals last month.
Arsenal boss Unai Emery said afterwards: "It's a different match today for Lichtsteiner, Xhaka and Torreira. We want to give them these minutes for fitness and also so that they're working together and tactically can start to work with us.
"In the first week it's clear that they're not at their best physically, but we want to continue working with them and if they are OK physically, mentally and in their performances, and better also than other players who were working with us, we could choose them in the first XI.
"Each match is giving us information to continue to improve and continue to develop. Today we played with 4-4-2, to try this system and tweak our mentality, style and ideas, but for me in the first half the possession with the ball and control with the ball wasn't as good as I wanted. It's for that reason that we started the second half with three midfielders. I think in the second half we controlled the match better with this system."