Olivier Giroud was the hero for Chelsea as the Blues fought back from two goals down to claim a 3-2 win over Premier League strugglers Southampton at St Mary's.
Goals from Dusan Tadic and Jan Bednarek looked to have Saints on course for a first home league win since November for Mark Hughes' side but Giroud, a 61st-minute substitute, scored two goals either side of Eden Hazard's strike to spare Antonio Conte's side what would have been a sixth defeat in their last eight league matches.
The victory keeps Chelsea's slim hopes of salvaging a top-four finish alive, while Southampton remain in the relegation zone.