Fighters where their fundamentals help them through aging...

How many figths did he lose and to whom? Where was he ranked? You´ll find that he lost to Charles and Marciano (and beat Walcott twice also once only arguably) and that he was as high ranked as number one or two. So, I think his fundamentals helped him a good bit.

 

Holyfield ?

 

Toney didn´t do too shabby.

 

Most of these guys, Toney excluded kept themselves in incredible for their age, I think Hopkins and Marquez are probably fitter than some of their opponents, same with Mayweather

 

To start with, I wouldn't call Louis the most fundamentally correct, not by some distance, but also I agree with Bodhi. Louis did age relatively well and a lot of that was down to his solid fundamentals.