Tottenham's Dejan Kulusevski headed a dramatic late equaliser in a six-goal thriller at Manchester City on Sunday after Liverpool staged a sensational comeback on a breathless afternoon in the Premier League.
Pep Guardiola's champions led 2-1 at the break thanks to a Phil Foden goal after Spurs captain Son Heung-min had scored at both ends, but Giovani Lo Celso's superb strike made it 2-2.
Substitute Jack Grealish looked to have secured City's first Premier League win in three games when he struck in the 81st minute but the visitors refused to lie down and Sweden international Kulusevski rose to power home from Brennan Johnson's cross, stunning the Etihad crowd.
The game ended in controversy after play was initially allowed to go on after Erling Haaland was fouled as he played Grealish in on goal before it was then called back.
Sunday's results mean Arsenal remain two points clear at the top of the table, with Liverpool second and City in third.
Earlier, Liverpool appeared set for their first home defeat in the Premier League since October 2022 when they trailed 3-2 to Bobby De Cordova-Reid's goal in the 80th minute.
But they turned the tables in dramatic fashion through Wataru Endo and Trent Alexander-Arnold, who struck in the 87th and 88th minutes for a 4-3 win over Fulham.
Chelsea recorded just their second Premier League home win of the season against Brighton, despite being reduced to 10 men when leading 2-1 before half-time, with Gallagher picking up a second booking.
Enzo Fernandez scored his second from the penalty spot in the 65th minute and Chelsea held on despite a late Joao Pedro goal.