IMO, Evander Holyfield does. He's the master of headbutt and this was the reason why Tyson bit his ear. I understand that he's a small heavyweight so he needs some bad tactics to help him beat bigger opponents. He's one of the dirtiest fighters in the world. Do you agree?
Holyfield!!! He must have missed that bible passage about not headbutting. Buried deep somewhere in Leviticus, I think.
Nah, Ortiz was a one-headbutt wonder. He needs thousands more to catch up to the 'butting legacies of Holy and BHop. Bradley and Ward have the best chance to surpass them.