Aaron Ramsdale admits Arsenal were 'not good enough' as they slipped to defeat at home to Brighton.
Enock Mwepu was the star of the show for the visitors, creating Leandro Trossard's opener before his own fine strike doubled the lead. Martin Odegaard's late consolation meant Brighton left with a deserved 2-1 win.
Arsenal were already reeling from defeat at Crystal Palace on Monday night and, with Kieran Tierney and Thomas Partey missing through injury, their small squad was exposed once more.
Gabriel Martinelli had a goal ruled out for offside but other than that Arsenal rarely threatened and they lost more ground in their hopes of returning to Champions League action.