Not to my knowledge. The extra weight may help his chin a bit (not that he needs it) and i don't think it will slow his hands at all. The only concern that i have is that he will have more power. This can be good and bad, good because hey who doesn't want more power, and bad because with increased power he might......crunch.....break his hand again.
There will be no KDs in this fight its going to decison ..Whathappened to Yankee Stadium ? I hate whn big fights are held in Vegas thats the Generic Mecca of Boxing for all those MTV types !