One of the Chin theories has been gaining popularity on ESB. Endorsed by Zak.

it can be heart as well. Tyson had a good chin but he was getting KTFO all the time at the end of his career because he just didnt care anymore

 

It makes sense that chins would get worse with age, as other aspect of boxing abilities do. Now, does this mean that will happen in every case? Of course not. But I think it would be reasonable to assert that, on average, a fighter's chin is going to get worse as he accumulates punishment and he will be more susceptible to getting KOd. This will be particularly the case, as with Rahman or Jones, when their chins weren't exactly rock solid to begin with.

Of course all fighters do not start with the same level of chin strength, which accounts for why fighters with good chins still tend to be pretty impervious to punishment, even later in their careers. Of course, this isn't always the case either. For every generalization there are always "outliers," i.e. exceptions to the rule.

 

Is your physical strength the same now as it was when you were in your 20s?? If you haven't reached your late 30s and early 40s, perhaps you haven't had personal experience with this, but your physical abilities, your strength, everything really, decline as you age. It's basic human physiology,

The REAL question should be why some individuals Do NOT experience a decline in punch resistance. I would argue that they are, when you look at the mass of humanity, anomalies.

 

Feather-fisted Taurus Sykes rocked him in a recent fight. I doubt that would have happened earlier, even with Rahman's shaky whiskers.

Let me be clear about one thing, though - I don't think Rahman's decline in punch resistance has been as steep or notable as Jones'. Rahman's chin was worse to begin with, and while it has probably diminished somewhat, it didn't fall off a cliff like Jones did.

 

Anybody with any sense should know that a fighter's punch resistance deteriorates over the course of there career. It's going to happen when you take shots, especially a lot of shots.

 

So where's the proof? You can't just point to guys getting stopped more regularly, because other intangibles are decreasing aswell.

 

Empirical evidence. He seemed to be taking punches just fine, and then he started getting starched.