Look at it from the other side: last time Mosley fought someone with superior defense he got dominated (Wright). I don't know who you've been watching, but Mayweather has an excellent jab. He used it to the body and upstairs. I can easily see Mayweather's defense taking the steam out of Mosley and PBF winning by UD with superior speed and reflexes. Mayweather showed he can look fantastic after a year+ layoff, but what will Mosley look like at down the street from 40?
Bookmarks