Willian’s 89th-minute goal has given Chelsea victory against Everton and keeps the West London club seven points clear of Manchester City.
Jose Mourinho’s side began on the front foot as Nemanja Matic’s went on a rampaging run before failing to trouble Tim Howard.
However, the visitors nearly took an early lead themselves when Romelu Lukaku forced a save from Petr Cech, who was preferred to first-choice keeper Thibaut Courtois.
Chelsea continued to push for a breakthrough as Loic Remy turned Juan Cuadrado’s cross inches wide of Everton’s goal before bring a save out of Howard
The hosts looked to take control as new signing Juan Cuadrado crossed for Loic Remy, who’s shot inches wide of the post.
Branislav Ivanovic squandered Chelsea’s best chance before the break when he header over the crossbar from only a few yards out, but Roberto Martinez’s men managed to reach half time with their clean sheet intact.
Howard needed to alert early in the second half as he kept out efforts from Eden Hazard, Matic and a curling effort from Willian, but the Toffees almost found a shock breakthrough when Lukaku was denied again by Cech following a pinpoint ball from Bryan Oviedo.
Everton showed more confidence in attack in the latter stages as Lukaku turned provider for Kevin Mirallas only for the substitute to blaze his shot over.
Chelsea thought they had snatched victory when Matic’s deflected shot found the back of the net, but his effort was ruled after Ivanovic turned the ball home from an offside position.
However, they finally found a winning goal with a minute remaining as Willian fired a shot in a crowded penalty area, which Howard was unable to keep out.