determining a good chin from the glass chins.

[Hulk]

I like your analysis, but no way Tyson's chin was the weakest. Lewis is the only one of those fighters to have been ko'd.

Watch all of Tyson's losses and he took massive punishment before going down. He never took one punch and fell. It was always several. Lewis went to sleep. Tyson just took severe beatings and still wasn't in lala land.

You're right. I've said the same thing before, no one KO punch ever got Mike Tyson. He always had to take a good ass whippin before he was worn down and knocked out. Except for his last two fights where he just basically sat down once he got tired and quit.