Video: Watch Chelsea’s ‘cheating’ Diego Costa elbow Arsenal’s Laurent Koscielny and get away with it
Chelsea beat Arsenal 2-0 thanks in no small part to dire refereeing that saw Diego Costa some how escape a red card.
Costa was shown a yellow by referee Mike Dean for clambering and slapping Laurent Koscielny. He then whined to Dein that Gabriel – whom he appeared to scratch – had trodden on his toe. So Gabriel was sent off.