Conor Coady’s late header helped Wolverhampton Wanderers fight back from two goals down to snatch a dramatic draw at Stamford Bridge.
Romelu Lukaku had put Chelsea ahead on 56 minutes with a penalty, after he had been fouled by Romain Saiss.
The Belgian scored his second two minutes later, curling in from Christian Pulisic’s pass.
Wolves pulled one back on 79 minutes with a brilliant goal from substitute Trincao after he had been set up by Chiquinho.
And seven minutes into stoppage time Coady headed in Chiquinho’s cross to stun Chelsea, who are without a win in three.
They are third on 67 points, four ahead of Arsenal, who play Leeds United on Sunday.
Wolves end a run of three consecutive defeats to stay eighth on 50 points and maintain their hopes of European football.
See: Chelsea report | Wolves report
Next fixtures
Chelsea: 11 May v Leeds (A)
Wolves: 11 May v Man City (H)
Match officials
Referee: Peter Bankes. Assistants: James Mainwaring, Timothy Wood. Fourth official: Robert Jones. VAR: Jarred Gillett. Assistant VAR: Natalie Aspinall.
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