Arsenal are closing in on a first Premier League title for 22 years after a late West Ham equaliser was ruled out due to a VAR review, giving the Gunners a huge boost in the title race.
Callum Wilson's stoppage time strike seemed to have given West Ham a lifeline in the relegation battle and Manchester City hope in the title race, but the decision to rule out the goal had huge ramifications at both ends of the table.
Arsenal's win, combined with dropped points for Aston Villa and Liverpool, has left the fight for a place in the Champions League next season open as in-form Bournemouth and Brighton close in.
Bournemouth's 16-game unbeaten run has put them in a strong position to qualify for European competition for the first time in the club's history, while Liverpool's lacklustre performance against Chelsea has sparked growing frustration among the Liverpool support.
Liverpool manager Arne Slot has promised big changes will be made for next season, despite reports suggesting he will survive a disappointing second season.