Diego Costa scored on his Chelsea debut as the title favourites came from behind to outclass newly-promoted Burnley at Turf Moor. There was the threat of an upset as Burnley's Scott Arfield opened the scoring with a long-range strike. But Burnley's lead was short-lived as Costa levelled with a simple tap-in. Andre Schurrle scored Chelsea's second after a cute Cesc Fabregas pass and Branislav Ivanovic struck from a corner to put his team in command. The only blemish on Costa's opening display was a yellow card for diving when through on goal after a defensive lapse by Ben Mee.