How about evanders rare heart disease? Perhaps it made him a little bit better by way of tenacity and literal heart not physical. Johnny Ruiz in one of the Holy fights: the broken nose blood bleeding swelling and swallowing and breathing it into his Lungs HAD to **** him off. (And dig deeper.) Look at what happened there: floored Holyfield, became first Latino hw champ, first hw champ from Puerto Rico. And Edwin Valero, tis a shame, but his frenetic energy could possibly be a sign of excitable delerium: aka a manic motor or metabolism made for straight up bouts of blood and gore. The dude was a knockout artist, and even in his longest fight he was fighting tooth and nail the whole time working for that knockout. Drugs addiction is what he suffered from. Also Mickey ward, being concussed and dizzy from a knockdown only to be buzzed by another Arturo Gatti shot that "woke him up" the opposite of stunned or hurt Let's talk about fighters feet: some fighters have gnarly blisters, but the illness does not make them better, it is the tireless work ethic/ tons of pride what keeps them in the game. Or perhaps in Shane Mosley s game, he had a good trainer in Naz who "wouldn't let him quit." Some fighters have to be saved from themselves btw, Deontay wilder , Fernando vargas for example. So basically I'm asking if an weakering infirmity has the potential to make a fighter great? Aka turning a weakness into a strength, fighting for negative to become a positive... Cause that's boxing, sometimes there is no right / perfect way.