He leant in to his shoulder quickly, looked like a bite to me. Who is that co-commentator who has dismissed this out of hand - claiming it was nothing more than a head butt?
Suarez ran towards Chiellini, leant in and appeared to bite him. Chiellini elbowed him away, and Suarez went down as if he was the victim. Utter tosser.
The sending off - a 50-50 ball, right in front of the ref, and Marchisiio went studs up into a Uruguayan shin, over the top of the ball.