Great idea for a thread! However I agree with very little of who you've listed: Wlad, Rocky, Holyfield, etc. Say what you will about Wlad he's technically superior to everyone he's set foot in the ring with, Rocky was skilled with his style or else he would have lost to Walcott or Charles if he was poor in skill, Holyfield was ALWAYS skilled technically.

When I think "Over achiever" in boxing I think of someone who lacks skills like speed, power, defense, technique, etc. Someone who wins fights they should have no reason winning.

My examples: James 'Buster' Douglas, Oliver McCall, Randy 'Tex' Cobb, Michael Bentt, Brian Vera, Mickey Ward, Danny Williams, Arturo Gatti, Carlos Baldomir...none of them were great with technical ability or anything but they had major wins and not due to them having any positive boxing abilities, just pure tenacity and will got them their wins vs certain competition.

The main over achiever in boxing history that has been overlooked is Joe Frazier. No defense at all, he was a 1 punch, 1 armed fighter, and he was a GREAT, GREAT fighter....Joe was no boxer he was a FIGHTER.