Eden Hazard kept his cool to complete his hat-trick from the spot

After surprisingly going behind to a Sol Bamba strike, the 'Blues' responded well to mount raid after raid on the 'Bluebirds' goal.

The pressure quickly told, with Hazard helping himself to a quick-fire brace just before the break to hand the Maurizio Sarri's side the advantage at the interval.

The scoreline remained 2-1 until the final 10 minutes, when the visitors handed Chelsea a chance to make the game safe.

Bamba went from potential hero to villain as he scythed down Willian, with the referee immediately pointing to the spot.

There only ever looked like being one result from there on out as Hazard kept his cool to send penalty specialist Neil Etheridge the wrong way from 12 yards and put daylight between the two sides.