Canelo will struggle against a defensive-minded Mayweather

By Dan Ambrose: Now that Floyd Mayweather Jr. (44-0, 26 KO's) has his father Floyd Sr. training him once again, Mayweather Jr. is a much more defensive-minded fighter than he was when he was being trained by his uncle Roger Mayweather. Floyd Sr's main focus is defense and he doesn't like to see his son