Chelsea suffered a setback in their title charge as they were held to a goalless draw by a stubborn Everton at Goodison Park.
Sean Dyche's Everton made it two points and two clean sheets from their last two games against Arsenal, and Chelsea, halting the Blues title charge in the process.
Enzo Maresca's Blues dominated the first half and the best chance of the game fell to Nicolas Jackson, whose effort was saved by Jordan Pickford, and Malo Gusto blasted the rebound over the bar.
Everton's defense held strong in the face of sustained pressure with the Toffees proving difficult to break down.
In the second half, Everton started to grow into the game and almost took the lead, but Robert Sánchez denied Jack Harrison from close range with an exceptional save.
The hosts continued to create opportunities, with Sánchez making crucial saves to keep Chelsea in the game.
Despite dominating possession for large parts of the game, Maresca's men were unable to find a breakthrough, and the draw keeps them second behind Liverpool.
Everton, meanwhile, climb to 15th in the standings, with Sean Dyche's side showing resilience in recent matches.