Which of these fighters would be the most difficult to defeat at their peak?

wow! what a list. i always said rjj was as good as i ever seen at his prime nobody could touch him. but a dream match i have always had are 2 guys who are both on the list. it's hagler and rjj i know they are different weight classes but they are close enough to work it out. would hagler walk him down late or would jones dazzle and confuse him for a whole fight i dont know but if i have to pick one guy it would rjj at his best.

 

I just don't see Roy losing at 168

No one is ever unbeatable, but I think Roy was the closest that ever was to being unbeatable at a specific weight class ... and that's Super Middleweight 168 lbs

 

Here's my picks for who I'd favor, if any:

Ali: Wouldn't favor anyone. Lewis and Frazier are the best men for the job, I think. Tyson would have a decent shot.

Charles at 175: I think I might pick Spinks. Might not though. Foster and Jones could pull the trick.

Jones at 168: His opponent has to weigh in at 168 too? If so, that kind of limits things. If not, and we can just make him a full fledged Light Heavyweight (which he always was in historical terms), I'd favor Spinks and probably Charles and Foster. Conn would be interesting.

Hagler at 160: I'd favor Monzon, Robinson, Jones and maybe Hopkins. I might pick Leonard if he were to step up to 160 in his prime as well.

Robinson at 147: Wouldn't favor anyone. Leonard and Burley run him close though.

Whitaker at 135: I'd pick Duran. Several others who could do it, but none that I'd favor.

Mayweather at 130: As with Jones, if it's strictly at 130, it limits things. Still, I'd favor Armstrong, Chavez, and maybe Saddler. Match him with Lightweights, and there's a few more I'd add.

Pep at 126: Even peak for peak, I pick Saddler. Saldivar could make things interesting.

 

Jones at 168. Very big fish in an incredibly small pond, historically speaking.

 

Edwin Valero at lightweight