Boxer from the past who can stop PBF?

[UnDeniable]

Duran beats PBF at LW
Hearns beats Floyd at Junior Middle not sure about WW

Sugar Ray Robinson And Leonard beat Floyd at Welter

[Jim Jeffries]

Hagler is a mismatch, in a 24 foot ring Floyd might be able to run for 12 rounds, but he wouldn't be able to potshot Marvin who had a longer reach even than Floyd's freakish reach.

At WW, Leonard by late TKO or comfortable UD, Floyd has never faced anyone close to Sugar Ray's caliber (sorry 34 year old Oscar doesn't count.)

At WW, Hearns would own Floyd, he was comfortably ahead of Leonard in their fight at WW, in the 14th, when he was stopped. And no, Floyd doesn't have close to Leonard's power at WW.

At WW, prime Mosley has the speed and power to give Floyd fits, late stoppage or comfortable UD.

At WW, SRR, no question, way too much for Floyd.

At LW, Duran and Mosley would both give Floyd a beating.

[slicksouthpaw16]

Duran at Lightweight? Draw or Mayweather by SD
Sugar Ray Leonard/Hearns at Welterweight? Mayweather by SD over Leonard. Hearns beats Floyd by UD IMO
Hagler at Middleweight? Unfair match up

[Tuggers1986]

A prime Shane Mosley anywhere from 130 to 147

[Silencers]

Duran beats Floyd at 135.

Hearns KO's Floyd. Leonard by SD.

Mosley beats him at 135 and 147 in his prime.

[The Troll]

there's alot of welterweights that could beat him. Paul Williams is certainly not an all time great but even a guy like him would give him problems just looking at it from the contemporary.

[passey]

Prime Terry Norris would give PBF hell.

[nathanmania]

Hagler will make him frustrated.

[Lucky13]

A peak De La Hoya at 147lb?

So very true.

[Lucky13]

Hagler will make him frustrated.

Hagler will frustrate him?