In those first rounds, Collazo was connecting on good shots to Shanes head, snapping it back. Which hand was he complaining about? If it was the left he probably hurt it on Shanes head with one of those hard shots. If he had said anything before the fight , people would have been questioning him anyway. The guy showed heart and tried to fight, I dont know if he normally closes his eyes between rounds....but he looked like he was trying to dig down. He did ballon up 13 pounds to 160, so it could be he just ran out of gas.