Arsenal 0-1 Chelsea Highlights

Diego Costa’s first-half strike earned Chelsea victory and a league double over title-chasers Arsenal who had Per Mertesacker sent off in the first half.

Arsenal were reduced to 10 men in the 18th minute when the German brought down Costa, who was through on goal.

Five minutes later the Spain striker put the Blues ahead when he tucked home Branislav Ivanovic’s low cross.

Highlights