Alexis Sanchez had equalised for the visitors, scoring on the rebound after Manuel Neuer saved his 30th-minute penalty but the Gunners suffered when captain Laurent Koscielny limped off injured to leave the defence exposed.
News of all that's transpired on and off the football field.
Lopetegui blends youth and experience in Spain World Cup squad
Photographic summary of the football matches played across Spain, Italy and France
Isco scored in the sixth minute of stoppage time as Spain launched an improbable fightback to snatch a 2-2 friendly draw against England with both their goals coming after the 89th minute at Wembley on Tuesday.
News of all that's transpired on and off the football field
La Liga champions Real Madrid beat Getafe 3-1 on Saturday with a goal from Gareth Bale and two strikes from Cristiano Ronaldo to go 12 points behind leaders Barcelona and warm up for next week's Champions League game at Paris St Germain.
Images from the UEFA Champions League matches played across Europe on Wednesday
A summary of Tuesday's group matches in the UEFA Champions League.
Images from the 2018 World Cup qualifiers played in Europe on Monday
News of all that's transpired on and off the football field