West Ham have conceded their second own-goal of the game, with Arsenal now within goal of drawing level.
The Hammers went 3-0 up within 30 minutes, with Arsenal at risk of completely capitulating at the London Stadium.
However, with Arsenal replying via a Tomas Soucek own goal on the stroke of half-time, it will have given Mikel Arteta’s men plenty of encouragement heading into the break.
They came out with a spring in their step, and after 15 minutes, they’ve added another goal to put themselves within one of the Hammers – albeit, it wasn’t them that scored it, again.
Arsenal, who were undone by a quick free-kick in the first-half of the contest, took one of their own, with some neat build-up play resulting in a cross into the box and an own-goal from Craig Dawson.