I feel for this man and his family. I think all of the above played a hand in failing him. Ref, corner, Doctor and so on and so forth. If I'm a cynic even Lampley who was literally drooling about "THIS is what FANS want from heavyweights". Mago the look of a fighter accumulating damage, not just losing rounds or showing a 'great chin'. There is that point when you literally see it lasting. I don't think it matters greatly how stellar of a defense a fighters does or does not have when it comes to the impact of damage in a business of punching people in the head.