Arsenal's winless run in all competitions has finally come to an end after coming back to beat West Ham 3-1 at the London Stadium.Angelo Ogbonna gave the hosts the lead late in the first half, before Gabriel Martinelli fired the Gunners level after an hour on his first Premier League start.Six minutes later, £72m summer signing Nicolas Pepe finally scored his first goal for Arsenal from open play, curling a beautiful effort into the top corner past David Martin.Pierre-Emerick Aubameyang sealed the three points shortly after as he volleyed home Pepe's cross to earn a massive three points for Freddie Ljungberg's side.The match got off to a cagey start, with both teams displaying evident signs of lacking in confidence.

Chances were at a premium at the London Stadium, with the first major talking point coming just before the half hour mark when Kieran Tierney had to be taken off with a serious looking shoulder injury.

The Scotsman went down in the box after an innocuous collision with Michail Antonio and the left-back was unable to continue in east London.

Mesut Ozil had the first real chance of the game moments after, but the German's header from six yards out sailed harmlessly over the crossbar.

And the Gunners were made to pay on 37 minutes when Ogbonna opened the scoring. The Italian defender met Robert Snodgrass' corner, with his header deflecting in off of Ainsley Maitland-Niles.

The second half began much in the same fashion as the first, with Arsenal seeing a lot of the ball but doing virtually nothing with it.

But right on the hour mark, 18-year-old sensation Martinelli fired the visitors level, cleverly converting Sead Kolasinac's cross from the left.

And amazingly, the Gunners were ahead six minutes later as Pepe ended his goal drought in sumptuous style, prompting chants of 'we are staying up' from the travelling supporters.

Ljungberg's side then took full advantage of a wilting West Ham to make it 3-1 on 69 minutes, with Aubameyang volleying home Pepe's cross.

It's the first time in eight years that Arsenal have come from behind at half-time to win a Premier League away game.