Greatest Conditioned Boxer In History?

[Evil Abed]

Aaron Pryor.

[MR.CHICANITO]

for 2 rounds shane mosley for 4 zab judah.

maybe evander holyfield,marvin hagler,bernard hopkins,antonio margarito,so many more but props to the older fighters from the 1800's or 1900's too for boxing hundreds of rounds and fighting practically barehanded