From 90's to now, which fighters came into fights with odds of winning big but got old over night and lost?
He didn't get old over night, he just got exposed and had the blueprint laid out for how to beat him.
Oscar De La Hoya against Manny Pacquiao, Meldrick Taylor against Cristiano Espana, and Roy Jones against Glen Johnson are cases where the favored fighters went from looking past-their-prime before to straight up SHOT during it.