The punches he took from Hearns and Mugabi who at the time Mugabi was undefeated and hit like an F'N Heavyweight...I think he was 26-0 with 26 ko's when he fought Hagler....Showed the chin of Marvin.....I mean Mugabi caught him HARD!!!! for the first 6 rds of that fight. If neither one of those two could KO Marvin...I can't think of anyone out there I have ever seen who could...Including a prime Toney or Jones..

To this day IMO Hagler ruined John Mugabi as a fighter...Destroyed his confidence