I can't think of anytime where Bernard Hopkins has suffered any type of injury in the sport of boxing, for example. Not even a cut.
http://www.youtube.com/watch?v=QFyZ1Q1knkI Also, who can forget Ol'Pops butt injury suffered in the Calzaghe fight?
Another I'd have to pick is James Toney. Has he ever been injured? I forget. I think he may have had an ankle injury once. Don't recall him ever bleeding or getting so much as a scratch.