What about Rocky Balboa - a journeyman club fighter taking the champion of the world the distance I'd also go for Henry Cooper vs Cassius Clay in 1963 - probably Cooper's career highlight was almost knocking out the soon to be heavyweight champion. Then Clay saying after the fight ' Cooper ain't a bum anymore'
Joe Bugner in his points loss to Joe Frazier. He never got the praise in any of his wins that got for that defeat to Frazier.
Marvin Johnson after his first loss to Matthew Saad Muhammad. Mike Ayala after his loss to Danny Lopez.
Vitali is great pick. Their were much doubt about him after the Byrd defeat plus Lewis was on a roll dominating Tyson and many people viewed Vitali as the European version of Grant being led to the slaughter. After that fight Vitali was viewed as the MAN in the division. His confidence was night and day in his next fight too.
Yes I thought Hagler pulled it out in the later rounds by a point or two. But man, had he trouble finding the target.
Your infatuation with Tyson is worrying... Yeah Tucker was a megastar after his snooze fest loss to Tyson...
People were calling Marquez and ATG for consistently losing close fights. He was ATG long before KTFO6. Same with Hearns. Lost to Leonard and Hagler. But is still ATG.
Ali gained a lot of respect despite losing to Frazier in their first fight, due to the heart and skill he displayed.