All of them apart from Vitali who would be a slight underdog. However no one ever lived who'd beat him easy. Not that version of Frazier.
Tyson Foreman Liston Prime Ali Joe Louis Riddick Bowe Lennox Lewis Vitali Klitscko Wladimir Klitscko Larry Holmes All favorites in my book, though he might have surprised a few of them.
I'd add David Tua to that list and Iki Ibeabuchi,David Haye,Hasim Rahman and Samuel Peter as live underdogs. Anybody with a huge punch has a decent chance.
Utter was in all caps with 4 exlamation points you must really be onto something:yep Frazier's defence was terrible and generally when he fought someone who could crack regardless of skill level he had problems. The bum Bonavena had him down twice and nearly beat him in his so called prime. Any body with a big punch has a good chance. I'll add Corrie Sanders as a live underdog.