Didn't Riddick Bowe really suddenly just lose it? What about Ezzard Charles? People like to say he was an OLD 32 when he fought Marciano. I know he had abut 100 pro fights at that point. That's more like battle-worn. How about Joe Frazier? He wasn't around THAT long really, compared to Ali or Holmes or Foreman or Holyfield. Even Tyson fought for about 20 years professionally. Seems Frazier was only around for 8 or so.