LONDON (AFP) – Conor Gallagher struck twice to condemn his former club Crystal Palace to a damaging 3-1 defeat on Monday and keep Chelsea in the hunt for European football next season.
The injury-ravaged Eagles were on course for a huge win in their battle to remain in the Premier League when Jefferson Lerma's long-range strike opened the scoring.
But Palace have won just three times in 19 games and were undone late on after Gallagher equalised within two minutes of the second half.
Gallagher fired home his second of the night and Enzo Fernandez added the third in stoppage time to lift Chelsea up to 10th and within two points of seventh.
Defeat leaves Palace still just five points above the relegation zone in 15th.
The home side were decimated by key injuries with all three of their star players Eberechi Eze, Michael Olise and Marc Guehi ruled out.
Manager Roy Hodgson and the club's board are under fire from the fans and banners held up before kick-off took aim at a "weak club culture" and "weak transfer policy."
But Palace more than held their own for the first 45 minutes thanks to another lacklustre Chelsea performance away from home.
Mauricio Pochettino had hailed his side's 3-1 FA Cup win at Aston Villa last week as his side's "best performance of the season."
However, it was back to the drawing board for the Argentine in the first half at Selhurst Park as Chelsea were pedestrian in possession and were punished.
Noni Madueke was easily bullied out of possession on the edge of his own box and the ball fell to Lerma to take aim and fire into the top corner beyond Djordje Petrovic.
It took until first-half stoppage time for Chelsea to even register a shot as Gallagher dragged his effort across goal.
But that was a warning Palace did not heed.
The start to the second half was delayed while referee Michael Oliver sought repairs to his communication device with his assistants and VAR.
And Palace were caught cold on the restart as Gallagher, who enjoyed a successful loan spell at Palace in the 2021/22 season, smashed home Malo Gusto's cross.
Chelsea suffered a setback when Thiago Silva was forced off with a groin injury that is likely to keep him out of the League Cup final against Liverpool later this month.
But they will at least head into a daunting trip to Manchester City on Saturday with some renewed confidence thanks to a late show that snatched all three points.
Palace kept Cole Palmer quiet for most of the night, but he still proved decisive with two assists in stoppage time.
The former City playmaker picked out Gallagher at the edge of the box to fire home his third goal in two games having not scored all season before then.
Palmer then freed Fernandez as Chelsea galloped from one end of the field to the other on the counter-attack and he sat down Daniel Munoz before stroking into the top corner.