As Gylfi Sigurdsson’s penalty won Everton manager Carlo Ancelotti a 1-0 victory over his former side, Chelsea missed the opportunity to climb to the top of the Premier League table.
With his new employers Everton going down 4-0 in the city, Ancelotti experienced a miserable return to Stamford Bridge last season.
However, in a second meeting with Frank Lampard, who was part of the Chelsea squad which secured a domestic double in the 2009-10 season under the Italian coach, he came out on top.
In the 22nd minute, the only goal of the game came thanks to an early Christmas gift from Edouard Mendy, the goalkeeper needlessly charging Dominic Calvert-Lewin as the striker tried to get his own flick-on from the long punt of Jordan Pickford to the end.
In his attempt from the spot for his first league goal in 17 games, Sigurdsson calmly rolled, much to the delight of the 2,000-strong crowd inside Goodison Park.
FT. Big performance. Big win.
UP THE TOFFEES!!! ✊💙
— Everton (@Everton) December 12, 2020
Reece James hit a low-drive post that Pickford seemed to get a slight touch to while Kurt Zouma, who spent a season on loan at Everton earlier in his career, planted a close-range attempt directly at the England goalkeeper. Chelsea reacted brightly to the setback of falling behind.
Before the break for the hosts, Richarlison struggled to capitalize on a straightforward shooting chance, slipping as he hit the ball with his left foot to make it simpler for Mendy.
Early in the second half, Sigurdsson went close with a free-kick and was then denied the opportunity to take another penalty when a VAR search found Calvert-Lewin offside before being bundled over by Ben Chilwell.
In spite of Lampard sending Tammy Abraham in place of the unsuccessful Kai Havertz to partner Olivier Giroud up top, one goal proved enough as Chelsea struggled to find an equalizer.
As Everton held firm, Mason Mount saw a free-kick kept out by a post, in the process securing a third consecutive home victory over their opponents as they climbed into the top half.