Gabriel Jesus scored a hat-trick on his first appearance at Emirates Stadium as Arsenal beat Sevilla 6-0 in the Emirates Cup.
Eddie Nketiah rounded off the win after a flowing counter-attack move.
Elsewhere, Manchester United were beaten 1-0 by Atletico Madrid in Oslo, with Joao Felix scoring late on before a red card for United's Fred.
The Gunners' victory ends a successful pre-season campaign, during which Brazilian Jesus scored seven goals after his £45m move from Manchester City.
It was Saka who opened the scoring from the penalty spot after he was brought down in the area, before Jesus doubled the hosts' lead, firing home Granit Xhaka's low cross.