Mason Mount's first-half strike and a Jorginho penalty secured a 2-1 win at Sheffield United as Chelsea claimed their third straight league victory.
There was an early scare for Chelsea when Oliver Burke was played in by Oliver McBurnie in the first minute but he fired into the side netting.
Chelsea edged ahead on 43 minutes. Ben Chilwell's weighted pass played in Timo Werner and his precise cutback was met first-time by Mount, who drilled home in style.
Sheff Utd were back on level terms after 54 minutes when Antonio Rudiger inadvertently poked the ball past his own goalkeeper Edouard Mendy.
But Chelsea restored their lead four minutes later when Werner drew a foul from goalkeeper Aaron Ramsdale and Jorginho made no mistake from 12 yards.
Chelsea, who remain unbeaten under Thomas Tuchel, move up to fifth place with 39 points - one point off the top four. Defeat leaves Sheff Utd bottom on 11 points.
See: Sheff Utd report | Chelsea report
Next fixtures
Sheff Utd: 15 Feb v West Ham (A)
Chelsea: 15 Feb v Newcastle (H)
Match officials
Referee: Kevin Friend. Assistants: Simon Beck, Eddie Smart. Fourth official: Andy Madley. VAR: Simon Hooper. Assistant VAR: Timothy Wood.
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