Chelsea after winning the title were beaten 3 -0 by West Brom during the course of which Cesc Fabregas picked up a red card and a 3 match ban for a crazy foul.Diego Costa was having an argument as usual with some members of the other team and Cesc tried to get them to stop arguing by kicking the ball into them.The ball hit Chris Brunt on the head and Cesc got his marching orders.
Maybe Cesc thought the ref would not recognise him because he had his mask on.

Mourinho laments the injustice of Cesc having to miss the first games of the coming season.