Oliver McCall has a 10 inch wrist and a 14 inch fist. do u think this has anything to do with his powerful punch and strong chin?

I guess it could, having heavier hands. People used to say that a lot of Liston's power was in his unusually large hands, I don't know how big they were, but he had to have special gloves made because his hands wouldn't fit into the normal ones.

McCall wasn't an exceptionally big puncher or anything so I don't think his hands had much to do with anything. Maybe they made his punches abit more stable and powerful though.

I think he could just naturally take a very good shot. Dude's head was screwed on with the bolts of Zeus...

Yes, his heavy punch and iron chin can both be attributed to his heavy bone structure.