If any? Hagler? Greb? LaMotta? I think his chin is up there with em. 422 amateur and pro fights. Never down. Really only hurt to the body a couple times at the end of the road.
None He arguably has the best chin in boxing history and you cant argue with this statement, we've never seen him hurt to the head, not even slightly wobbled Hes fought huge punchers and until we see him hurt he may as well have the best jaw ever
Monzon was dropped 3 times and nearly stopped by Cambeiro. Bennie had him dropped and badly hurt in the rematch too. His chin isn't on the Hagler/LaMotta/Greb/GGG class.
Well if you face a bunch of nobodies for the most part you won't be hurt. Not only does Hagler have a better chin compared to GGG I would say James Toney and Mike McCallum also have better chins than GGG at middleweight, Both Toney and McCallum moved up in weight and still were never stopped. A middleweight named William "Gorilla" Jones had 156 bouts and was only knocked down 1 time and never stopped.
Canelo taking Bivol’s shots is better than anything GGG ever showed. And Canelo also took GGG’s shots.
Lemieux, Stevens, Canelo, Jacobs and even guys like Murata are all huge punchers. Lemieux and Stevens being collosal punchers and they nailed GGG with flush shots
If you take into account his decorated Amature Career I say none....Should have been on the Canvas at His age against a Prime Canelo....Chin is granite.!!!!