mayweather retired due to a shortage of big money opponents, physical injuries, and the general boxing publics dislike of him.
This wouldve made for his next big money fight. But as soon as they were signed to go off on each other he retired right away so as not make it seem as if he didnt want to figth any of these guys.
He discredited Pac to hopefully score a fight with him. A fight he knows he will win with ease. Any of these guys up top would make him look VERY vulnerable or beat him.
He just didnt want to fight anybody who posed a serious threat.
Comment