Hagler kills Jones, especially at 160, where Hagler fought his entire career. The Jones that fought Hopkins? Have any of you actually seen that fight? In 1975 that fight was an 8 rounder: the skill displayed was far from impressive. Hagler would beat Jones every time for one simple reason: Jones could do his best and then Marvin would hit him back, hard. Hagler loved to fight and RJJ never had the stomach for it.