Striker Richarlison profited from a Chelsea error to secure struggling Everton a 1-0 Premier League win and what could be a precious three points in their bid to avoid relegation at a rocking Goodison Park on Sunday.
The home side grabbed the lead a minute into the second half after Cesar Azpilicueta gave up possession under pressure from the Brazilian forward, who harried the Chelsea captain into a mistake before slotting a low shot past goalkeeper Edouard Mendy.
Chelsea dominated possession and Everton had to hold on grimly for the final half-hour. They stay in the relegation zone, but move to within two points of Burnley and Leeds United with a game in hand.
Chelsea remain third with 66 points from 34 games as they bid to qualify for the Champions League. They are three points ahead of fourth-placed Arsenal.