Brighton provided another huge blow to Chelsea's dwindling hopes of winning this season's Premier League title by coming from behind to claim a well-deserved draw at the Amex Stadium.
Adam Webster found all the space he needed to head in from a corner in the second half and give the home side a point to reward a display full of energy and endeavour.
Thomas Tuchel's side started poorly and lacked authority throughout, opening the scoring against the run of play through Hakim Ziyech's well-struck low drive from outside the box.
But they failed to build on the moment, never looking assured, and for all their desperate intent simply could not find a way to restore their lead and claim the vital win.