Arsenal wasted the opportunity to leapfrog Premier League leaders Liverpool as they suffered a surprise 2-0 home defeat to West Ham.
A frustrating first half for Arsenal began with controversy when Tomas Soucek put West Ham ahead. The ball appeared to have gone out of play in the build-up, but a lengthy VAR check found no conclusive evidence and the goal stood.
Mikel Arteta's side did much more with their possession in the second half, but they fell further behind when former Gunner Konstantinos Mavropanos climbed highest to head home from a corner.
Arsenal huffed and puffed for the remainder of the contest, but when Gabriel Jesus wasted two headed chances in the space of three minutes, it felt like it just wasn't going to be their night.
David Raya spared further embarrassment by saving a late Said Benrahma penalty, but Arsenal were left frustrated by a defensive masterclass.
GOAL rates Arsenal's players from the Emirates Stadium...