What one win do y'all think legitimized a fighters career more than any other?
Take B-Hop, he punched his ticket to the hall of fame when he was the first man to beat Tito. Beating Arguello gave Pryor the respect he was seeking, Arguello was already a hall of famer. Andre Ward while everyone always thought he was a good fighter, but he needed that win over Kovalev to truly become a great. I remember people used to doubt Roy Jones Jr. until he put those hands on Toney.
Basically what in your opinion is the most IMPORTANT win for an individual fighter?