Ali v Holmes (heavyweight), 15 rounds Hagler v Hopkins (middleweight), 12 rounds. Duran v Whitaker (lightweight), 12 rounds. I've picked 12 rounds for the second two fights based on Hopkins and Whitaker having never went 15 rounds. Please don't mention a 15 round outcome on these fights.
Muhammad Ali 9-6 Hopkins 7-5 in a hotly disputed contest Duran in a 15 rounder, but now in 12 rounds it can go either way really, pick Duran by close decision though
Ali v Holmes (heavyweight), 15 rounds = Ali WS Hagler v Hopkins (middleweight), 12 rounds = Hagler WS Duran v Whitaker (lightweight), 12 rounds = Whitaker WU
I'd pick Ali over Holmes. People always say that prime Holmes would be bad for Ali, and it's logical, because he establishes a jab, boxes and moves, and can be aggressive. But if you look at actuality, it's not fighters such as Larry Holmes that were outright bad for Muhammad Ali. I think it would be an very hard fought fight, but Ali would be able to get a win by some rounds, nit just in and out movement being a massive factor, but lateral movement of many dimensions. I would pick Hagler over Hopkins. Hopkins to me is one of the greatest ring generals i have seen, it was always them fast hands that were bad for him, but flash without substance will not get the job done against him. Hagler is not slow, is he fast enough to beat Hopkins? I think his decent speed together with his adaptability and doggedness to win would get him a decision, after which Hopkins, as usual tells us all it was a robbery. But i think it would be legit, when Hagler unloads we'd see him land more clean shots on Hopkins than anyone else, ever. Duran vs Whitaker, CBA. I might pick Duran, that's all i'm saying, we've done it to death, resussitated that mo'fo, and then ****in killed it again.
Ali (1967) v Holmes (1982) (heavyweight), 15 rounds: Ali 10-5, or better. Hagler (1985) v Hopkins (2000) (middleweight), 12 rounds: Hagler 8-4 Duran (1978 ) v Whitaker (1991) (lightweight), 12 rounds: Duran 7-5