Tammy Abraham’s last-gasp goal topped Chelsea’s dazzling second-half fightback as they recouped from 3-0 down to guarantee a point at West Brom.
The striker secured a 3-3 draw after Frank Lampard’s side looked beaten at the break.
Mason Mount and Callum Hudson-Odoi struck after the restart to help break Baggies hearts.
Chelsea’ defensive frailties had been exposed in the main half as Callum Robinson was gifted a brace by botches from Marcos Alonso and Thiago Silva.
Kyle Bartley was left plain from a corner to score a third as Chelsea were uncovered.
Chelsea fought hard to share a point with West Brom.