Fighters who had those MAJOR unbeatable runs?

You have to take into account the quality of oppoents as well! Chavez is certainly up there with the best runs, and i agree Hopkins should be too becausse his unbeaten run has been like 95% world title fights. Trinidad as much as i dis -like him had 40 fights unbeaten and beat some very credible opponents, so respect for that. Morales too before he lost to Barrera ( officially ). But the winner i think...Ricardo Lopez. Unbeaten all through his career and beat very good fighters and only once looked like losing in a fight ( against Alavez ).

Julio Cesar Chavez. Was 90-0-1 before he lost to Frankie Randall.

Rocky marciano. 49 fights no losses

Hopkins has had a serious run but I dont think anyone looks at him as unbeatable. In fact he has been pegged to lose a couple times but hasn't. However, looking back, none of thoses 20 fighters had any hope in hell. Ali WOULD of had a major run during thoses 3 years he wasn't allowed to fight. No one would of been able to touch him. So ummmmm, runs where fighters seemed unstoppable? Early Tyson I guess. A few other guys. However, it doesn't seem to happen that offen.