Gylfi Sigurdsson's first-half penalty earned Everton a 1-0 win over Chelsea at Goodison Park.
Everton were awarded the spot-kick in the 22nd minute after Chelsea goalkeeper Edouard Mendy had fouled Dominic Calvert-Lewin.
Sigurdsson sent Mendy the wrong way for his first Premier League goal of the season.
Chelsea came close to a quick response when Reece James hit the inside of the post with a shot from distance.
Three minutes after half-time Mason Mount clipped the crossbar with a deft lob over the advanced Jordan Pickford.
And, after a second penalty award for a foul on Calvert-Lewin was overturned by the VAR for offside in the build-up, Mount hit the woodwork again, from a free-kick.
Everton held on to move up to seventh on 20 points.
Chelsea, who lost for the first time in 10 PL matches, lie third on 22 points.
See: Everton report | Chelsea report
Next fixtures
Everton: 16 Dec v Leicester (A)
Chelsea: 15 Dec v Wolves (A)
Match officials
Referee: Jonathan Moss. Assistants: Marc Perry, Dan Robathan. Fourth official: Lee Mason. VAR: Andre Marriner. Assistant VAR: Andy Halliday.
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