The correct answer is Valuev. With literally nothing more than his incredible size he was able to make millions, defeat far more talented men, become a titlist in boxing’s glamour division and ran up a very numerically impressive record.
Julio C. Chavez Sr. He was a one dimensional fighter who held the record of 87-0 before his first loss. This was so amazing.
Not 'best' but list of some of the recent ones. Wilder - good jab and killer overhand Pavlik - good 1-2 Lacy - good left hook Mayorga - strong
Somebody beat me to it - Randall Cobb. No defense, not real power, no technique, slow, but fought at championship level because of a will to compete