Chelsea's surprise home defeat to Arsenal once again blew a dramatic race for a Premier League top-four finish wide open.
A win for Chelsea would have all but guaranteed the Blues will be playing Champions League football next season, but Emile Smith Rowe's first-half goal saw the Gunners leave Stamford Bridge with a 1-0 victory.
The loss meant Chelsea missed the chance to go third in the table, and leaves Thomas Tuchel's side looking over their shoulders during the run-in.
Arsenal's win was great news for West Ham, Liverpool and Tottenham, who all still hold hopes of finishing in the top four this term.
While Chelsea will remain confident of finishing the job in their remaining two League games, Tuchel also has to balance his squad with FA Cup and Champions League Finals to contend with.
Manchester United have already joined Man City in the Champions League next season, and Leicester would realistically have to lose their last two games and see one of West Ham, Spurs or Liverpool win all their remaining matches to drop out.
There is next to no room for error for the three teams chasing Chelsea now, but there could be plenty of twists and turns left during the run-in.
Gallery: The 50 best players signed by Premier League sides from EFL clubs (Grid)
Premier League table | Top four race
Premier League fixtures
Leicester: Chelsea (18 May), Spurs (23 May)
Chelsea: Leicester (18 May), Aston Villa (23 May)
West Ham: Brighton (15 May), West Brom (19 May), Southampton (23 May)
Spurs: Wolves (16 May), Aston Villa (19 May), Leicester (23 May)