Chelsea midfielder Conor Gallagher came back to haunt Crystal Palace by scoring an incredible winner against his former side at Selhurst Park.
Gallagher scored in the final minute of normal time to snatch a 2-1 win for Chelsea in south London.
Palace had taken an early lead in the match through Odsonne Edouard, who fired the home side in front after just seven minutes.
It could have got worse for Chelsea when Thiago Silva slipped and handled the ball - denying Jordan Ayew a run on goal. But fortunately for the Blues, the Brazilian escaped with just a yellow card.
Chelsea immediately took advantage of their good fortune, with Pierre-Emerick Aubameyang levelling the scores with his first goal for the west London club.
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The match looked to be heading for a draw when second-half substitute Gallagher fired in a superb winner from the edge of the box - his first senior goal for Chelsea.
The England international refused to celebrate, having spent last season on loan at Selhurst Park.
"It was crazy to be honest," Gallagher told the BBC after the final whistle.
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"Of course I was dying to get into the pitch. I felt like I could help the team win the game and thankfully got the chance to get a shot off and it went in.
"It had to come against Crystal Palace. I loved my time here and the fans have been brilliant, they were clapping me after the game after I just scored [against them].
"It's unreal. I'm so thankful for how they treated me while I was here and even now. I'm buzzing to get the three points, to get my first goal for Chelsea and hopefully it's time to kick on from here.”
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Gallagher scored eight goals in 39 appearances for Palace while on loan at the club last season.
He returned to Chelsea for the start of new campaign and has played seven times this term.
His winner has moved Chelsea up to fifth in the Premier League, while Palace stay 17th.
Topics: Conor Gallagher, Crystal Palace, Football, Premier League, Chelsea
Rory O'Callaghan