Honestly, it's always hard to say as time has a way of somewhat discrediting certain fighters... but I'd have to say fairly high. I have written long soliloquys on this forum about not likeing Floyd and him avoiding certain guys and what have you but he's fought most of the best guys out there and won against all of them.... dispatching them... I'll say that many were boring after leaving 130 because he seemed so dominant but I've needed to look past my dislike for him to see that whether it was a ko or a points win... he always won in ways where you KNEW Floyd clearly won. Floyd fights in such a deep era in at this time that you'll always hear, "He needs to fight _____ to get my respect" Yatta Yatta Yatta... I've done it myself. But the fact remains that NO ONE has beaten him and we've all at one time or another probably bet against him. He's proven me wrong time and again. He is one of the best defensive fighters of all time. He'll get high marks. He's earned them. PS. I hate Floyd Mayweather