Arsenal ended a run of three defeats with a crucial victory at Chelsea to keep the hope of making top four alive.
Three consecutive league defeats almost ruin the Gunners’ hopes of securing a place in next season’s Champions League but this win will provide renewed belief.
Eddie Nketiah rewarded manager Mikel Arteta’s faith when he took advantage of Andreas Christensen’s header with a composed finish in the 13th minute.
Timo Werner equalised four minutes later before Emile Smith Rowe added another for Arsenal.
Chelsea pulled back before the break through captain Cesar Azpilicueta but Nketiah took advantage of some defensive errors to put Arsenal back in front after 57 minutes.
Bukayo Saka sealed the win with a penalty when he was brought down by Azpilicueta.
The Gunners are now level on points with north London rivals Tottenham with a derby at Emirates Stadium still to come.
