You mean the superman head butt that started it all in the corner? Ortiz had no other choice, he was looking for a way out. Floyd gave it to him. Floyd should have beat his ass some more. He let him get off too easy.
What happened in the 4th round? Enlighten me. Mayweather was starting to beat on him. Ortiz came forward with a flurry where he landed about 1 out of 4 punches and then committed one of the worst headbutts in the history of boxing. Don't make me laugh and tell me that Ortiz was getting anything done. He was losing every minute of the fight.
Problems like what? Hurting his hand landing his right on Ortiz's jaw at will? The **** you read on this forum :rofl