Arsenal cruised to a comprehensive 3-0 win over Chelsea to hand Antonio Conte's side back-to-back Premier League defeats in the London derby at Emirates Stadium.
Gunners show title credentials in win over Chelsea
A match expected to be a closely contested affair was blown apart in the 11th minute when Alexis Sanchez capitalised on a dreadful error by Gary Cahill to open the scoring on his 100th Arsenal outing.
Theo Walcott - also reaching a milestone in his 350th game for the Gunners - added a quickfire second, crowning a glorious passing move, and there was further attacking brilliance as the influential Mesut Ozil made it 3-0 five minutes before half-time.
A first league win over the Blues since October 2011 moves Arsene Wenger's team up to third in the table behind Manchester City and Tottenham, who meet next weekend, while Conte has work to do as the early stages of his Chelsea reign veer off course.
Former Arsenal captain Cesc Fabregas made his first league start of the season, on the back of scoring twice in Tuesday's 4-2 EFL Cup win over Leicester City, but Arsenal swamped their opponents in central areas, while reverting to a back three early in the second period did nothing to restore Chelsea's poise.
Antonio Conte wants to phase Gary Cahill and Branislav Ivanovic out of the Chelsea squad, The Daily Mail reports.
The pair were responsible for an Arsenal goal in Saturday's 3-0 defeat and Conte hopes to replace them.
Despite the signing of David Luiz and Marcos Alonso in the summer, the Italian reportedly wants to sign two centre-backs and a full-back in January.
Michael Keane from Burnley and Middlesbrough's Ben Gibson are two reported targets as the Blues are looking to sign home-grown players.