Arsenal came from behind to beat West Ham United 3-1 at Emirates Stadium for their first points of the season.
Marko Arnautovic had put the Hammers in front on 25 minutes, striking from the edge of the area after a one-two with Felipe Anderson.
The lead lasted just five minutes. Nacho Monreal equalised when Hector Bellerin's cross hit Alex Iwobi and fell for the Spaniard to convert
West Ham's Robert Snodgrass sent a great chance straight at Petr Cech and, after Arnautovic went off injured, Arsenal took advantage.
Alexandre Lacazette's cross went in off Issa Diop for an own goal.
Danny Welbeck converted Bellerin's cross in stoppage time to confirm the win that lifts Arsenal up to 11th.
West Ham are bottom after a third consecutive defeat.
See: Arsenal report | West Ham report
Next fixtures
Arsenal: 2 Sep v Cardiff (A)
West Ham: 1 Sep v Wolves (H)