Victor Ortiz, as he proved against Maidana, whether down to immaturity or not, that he lacks the mental toughness that I'm sure is needed against someone who doesn't lay down and die. Nate campbell, if he pulls the same game he did against Diaz, when in about round 7, shouted to Diaz at the bell "I can do this all night", the life will drain right out of Ortiz for sure, as it did from the baby bull and the mental toughness will once more fail.