Who had the best stamina?

[PsychoPat]

Of all time, who had the best stamina and what were their training routines?
Armstrong, Marciano, duran, basillo, Mancini, Margarito, Paul Williams, Hatton, all had great stamina

I read about Juan Diaz who had great stamina also never doing roadwork opting instead doing 45 minutes on the stair master and swimming an hour, then 2 hours after this training in the gym

Carl froch, pure stamina and chin trained like a spartan for fights.

[OctoberRed]

Carl froch, pure stamina and chin trained like a spartan for fights.

and best boxing nose.

[elfag]

Vitali, Valuev and Fury for their size. They throw arm punches but are fresh in the 12th.

Everyone has calzaghe here, he throws 1000 slaps, not punches, per fight.

Hatton sure but its ineffective aggression against the higher skilled. Floyd was fresh in the 10th and Hatton was falling over from exhaustion. Floyds conditioning baseline is top notch then he is a master at conserving energy on top of it, thats why he is never more tired than his opponents, ever.

James toney, good stamina for a fat man who doesnt do road work and just spars excessively.