Arsenal were held to a draw by West Ham on Wednesday night, the second surprise result in a row the Hammers have managed.
It marks an improvement under new manager David Moyes. But how has he pulled it off? And what did Arsene Wenger do to make his Arsenal side so blunted at the London Stadium?
Sportsmail has looked at how the game in east London was drawn.
West Ham’s organisation
One of the biggest criticisms of Slaven Bilic’s West Ham was the way they lost any ability to maintain organisation at the back after his first season in charge.