Tammy Abraham scored a late winner for Chelsea against a resurgent Arsenal at the Emirates Stadium, after the Gunners had led for the vast majority of the game.
Pierre-Emerick Aubameyang gave Arsenal a deserved lead in the 13th minute, heading in after a corner was flicked on by Callum Chambers.
The Gunners were by far the more dominant team in the first half an hour, as they frequently got in behind the Chelsea defence, but were unable to pick the final pass or create another clear opportunity.
Frank Lampard switched to a back four before the break, taking off Emerson and replacing him with Jorginho, as the visitors started to get a foothold in the game.
Kurt Zouma missed the Blues’ best chance, a he fluffed his lines in a carbon copy of the situation which saw Aubameyang open the scoring for the home side.
Chelsea were better in the second period, dominating possession for long periods, but looked short of ideas in the final third.
Joe Willock came close to doubling Arsenal’s lead with 15 minutes to play, as Chelsea looked to ramp up the pressure on the Gunners’ defence.
Bernd Leno was at fault as Jorginho tapped in after the German goalkeeper came and flapped at a Mason Mount cross.
Abraham then stole all three points for Chelsea as he expertly controlled and finished Willian’s cross after a breakaway for the visitors.
Mikel Arteta and Arsenal will feel hard done by after a much improved performance.