Mikel Merino scored the only goal of the game as Arsenal beat Chelsea to move 12 points behind Premier League leaders Liverpool.
Both of these sides came into the match without their first-choice striker, with Kai Havertz ruled out for the season with a hamstring injury for Arsenal and Nicolas Jackson missing for Chelsea.
Chelsea were also without their most important player in Cole Palmer, who was out of the squad with an injury, and it was the first time the Blues have to had to play without him since they lost 5-0 to Arsenal in April last season.
Arsenal, again naming Merino as a makeshift striker, dominated the game early on and Leandro Trossard, Gabriel Martinelli and Declan Rice all went close.
Merino’s winner came in the 20th minute when he flicked on a curling corner from Martin Odegaard past a stretching Robert Sanchez.
Chelsea’s best opportunity to take something from the game came when Marc Cucurella’s powerful effort slipped through David Raya’s hands but the ball rolled just past the post.
Robert Sanchez, recently restored as Chelsea’s first-choice keeper, had some shaky moments as the Blues were put under pressure with a number of crosses into the area and he was jeered by the home crowd when he had the ball at his feet.
Sanchez produced an excellent save to deny Merino in the second half, but Chelsea could not find the goal to get something from the game.
Liverpool are not playing in the league this weekend as they are involved in the Carabao Cup final.
