I think it's safe to say Hagler wouldn't have just gone into a shell and let himself get pummeled. Too determined for that. When Mugabi landed that hook in the sixth, the one I mentioned earlier, it only angered Hagler who then forced Mugabi back and sent him reeling. Other times, like against Hart and Hearns, when Hagler took a painful shot he closed the distance and stopped himself from taking further punishment.
Fair calls. He was never massively concussed tho, as you definitely would agree. If he does get sat on his ass hard, and i mean hard, how does he react. Ali, Robinson, Leonard, Holmes, Whitaker, all showed they could get thru the severe fog and debilitating conditions and still survive or win. Could Hagler avoid like an Ali/Whitaker under this? Would or could he fight his way out like a Holmes (a saver is that Larry didn't get thru this against great opponents)? I'm not saying Hagler can't, but one could spin this and say Hagler, in some extreme ways, wasn't quite as proven. I'm sure many might question my question, but i think it's a legitimate comment.
Hagler's customary level of physical conditioning essentially answers this question in my mind. Despite having a glass jaw, Marv's idol Floyd Patterson was never laid out cold, the way Braddock was against Louis, or Liston against Leotis Martin, or Johansson against Patterson himself. Even in his two losses to Liston, Floyd was getting up as the referee finished tolling the count. This was because Patterson always maintained a high degree of fitness. Rapid recovery is one of the payoffs of a disciplined training regimen.
Ali proved he was unknockoutable cuz it's a fact, it never happened against the biggest heavyweight hitters in history. So i don't know how you can't include him.
just 1 point,hagler never had to handle heavyweight punches.seems to me if were talking about the toughest the heavies rule unless you mean p4p
Lots of guys have fought past their primes and didn't get knocked out. Its not unheard of in the least bit.