Ken Norton .Vs. (90's) George Foreman

Very possible. But vastly inferior fighters such as Morrison (whose chin was worse than Nortons most likely) went the full 12 and beat him.

This is a close one.

Morrison was interior? Really? Seeing the fact Morrison had far more punching power, Was a better boxer. Please could somebody explain how being stopped by Lewis, Mercer and Bent 3 people means you have a glas chin? Lewis clocked Morrison and he got up. Lewis clock Tyson and Tyson stayed down. The bent Ko wsa a fluke. Mercer took Morrisons punches and gased him out and stopped him. So many fighters have been stopped More tham Morrison has but most don't get classifed as having a glass chin.

In any case a 60 year old Foreman would knock out Ken Norton in a few rounds.