Thanks to their success, Arsenal are three points ahead of Liverpool at the top of the table, but they have a game in hand. Manchester City is another point back in third place, but the defending champions have even played two games less.
The Gunners took the lead in the fourth minute thanks to Leandro Trossard. The home team decided the win after the break during a wild eighteen-minute game, when Ben White and Kai Havertz scored two goals.
With a record win in the London derby, the Gunners partly made up for the previous home loss to Aston Villa. In addition, Chelsea, who are in ninth place in the table, suffered their first league defeat after eight games.