He had a good chin. He wasn't Chuvalo or Lamotta, but it was a solid chin. Can't fault him on it, he fought for nearly 30 years and fought some crazy bombers, and was only stopped once by a prime Mike Tyson in his first fight back after a 2 year layoff.

He was fighting guys like Holyfield, Mercer, and McCall well into his 40s and he wasn't getting stopped. The guy could take a serious punch, and more importantly he had the heart to get up and survive when he did get hurt.