Alexis Arguello Salvador Sanchez Vicente Saldivar Eusebio Pedroza All Spartans in training, and had a ridiculous workrate in the final three.
Read about Jem Carney? He had a freaky ability to do better as the fight went on. Even in his last fight against Dick Burge, coming off an over 3 year lay off, he was doing better as it wore on.
Armstrong, Arguello, Sanchez, Saldivar, Tiger, Pedroza, French, Harada, Buchanan, Calzaghe all jumped to mind but have been mentioned. Ohba was a machine when he hit his stride despite being wobbly early on, he was like a cyborg in the late rounds. I'm surprised nobody has mentioned Battling Nelson tbh, always thought he was looked upon as a standard bearer in this sense. Anybody else think Galaxy? He often didn't give the cannon fodder he fought much of a chance to go deep into fights but really carried his power and workrate late imo. Moon the same, especially taking into account the missed punches that can really sap your energy. A lot of the great movers with limited power but a consistent output were often routinely conditioned and prepared to go 15 at a pace. Canto still doesn't get enough credit in this regard imo. Always having to move his feet, stay on his toes, pivot, slide, slip shots, take half steps etc while giving up size and strength all the time. Always needing to dictate the range despite his short reach and maintain his alertness and mental energy while staying relaxed. I'm also surprised that Griffith hasn't been mentioned, he was the epitomy of great conditioning over the championship distance even when well past his prime.
Kuniaki Shibata is ridiculously impressive imo due to being able to keep both his fast movement and explosiveness for the entire 15 rounds, even in hard fights.
Prime Ali, Prime A,Pryor. B,Chacon , B, Edwards pop in my mind , some not mentioned. E.Pedroza lived for taking opponents past 12rds.
