Ollie Watkins scored the only goal of the game during Chelsea's 1-0 defeat at home to Aston Villa.
Unai Emery's side bounced back from a 3-2 defeat by Legia Warsaw in the Europa Conference League on Thursday to secure their fourth league victory of the season, rising to sixth in the Premier League.
It came after Chelsea's Malo Gusto was sent off for a dangerous tackle on Luca Digne. The referee initially awarded a yellow card for the challenge, but it was subsequently upgraded to a red following a VAR review.