If noone has seen SRR fight at welter, then it's all speculation. Noone can say for sure what he would do. He's by far 1 of the greatest of all time, from what we have seen. But what we have seen, Roy and Floyd would stand a good chance. Same with (puke) SRL. On paper, his record during that time was incredible, but that doesn't neccesarily mean everything. Most people discredit Marciano, even though he was undefeated.

I'm not trying at all to discredit SRR, but there is an aura of invincibility, almost like a myth, that sways alot of opinions.

Now, above ww, I'd say Roy would beat him. But thats just my opinion.