Unai Emery registered his first win as Arsenal boss in the Premier League, as the Gunners came from behind to defeat London rivals West Ham United.
Mezut Ozil was left out of the side after reportedly falling ill as Aaron Ramsey was drafted back into the starting line-up for the Gunners.
The Gunners had the ball inside of the net after 11 minutes when Ramsey nodded home, but the Welshman’s goal was flagged for an offside.
However, it was the visitors who the lead on 25 minutes as Marko Arnautovic bagged his second of the second with a well-taken low finish past Petr Cech.
Arsenal did not have wait long for the equaliser as Hector Bellerin raced to the byline before sending a low cross into the box, where Nacho Monreal was on hand fire home.
Neither side could carve out another clear-cut chance as the half went on, as they went into the halftime break level pegging.
The Hammers looked lively upon resumption in the second half, although Arnautovic was guilty of squandering two chances in the opening 10 minutes,
Manuel Pellergrini opted for a change on the hour mark as former Arsenal striker Lucas Perez was introduced, while Javier Hernandez replaced the injured Arnautovic.
The Gunners eventually took the lead in the 70th minute as Alexandre Lacazette’s volley was deflected into the back of the net by Hammers defender, Issa Diop.
West Ham pushed for an equaliser and were nearly rewarded in the 90th minute, but Felipe Anderson’s low cross was not converted by any of his teammates in the box.
The win was sealed in the second minute of time as Bellerin picked out an un-marked Danny Welbeck, who turned and fired past Lukasz Fabianski to make it 3-1,