Chelsea dominated proceedings from the onset against Burnley, with Eden Hazard playing a key role in the 3-0 win.
Hazard opened the scoring at Stamford Bridge with a beautiful run that ended with a strike from 20 yards out.
The Blues sat deep in the first half, controlled the game and hit Burnley on the counter. Willian got the second for Chelsea with a classy finish after an insightful pass from Costa.
Pedro and Victor Moses combined for the latter to score the third after 89 minutes – his first league goal for the club since November 2012.