Sal Sanchez was pretty fine tuned, aggressive counterpuncher that used to get into a fantastic rhythm.
............And physically, I think Russell's use of the word "machine" is excellent when regarding Sanchez. We've all read here how his breathing and heartrate would return to resting rates in as little as 37 seconds. That's almost like flipping a switch. Unreal.
Pryor was all over the place style wise, i'd hardly call him machine like. Joe Louis also comes to mind here, uber precise and drilled.
Pryor deserves mention if only for pure endurance, though I really wonder how much of that was drug fueled, knowing Pryror.
The topics a bit contrasting, "finely tuned" is the header while "more of a machine than a man" sits below. I wasn't thinking finely tuned and endurance went together, but if we're talking endurance Pryor and Armstrong certainly fit. I still wouldn't call Aaron finely tuned, but he can certainly ham it up late in a fight. Sanchez is both, finely tuned and great endurance wise.
Both Marciano and Hagler were fanatical trainers and this can be made the primary reason that both were the champions that they were.
Hagler; it was his biggest weakness as well as a strength. Hagler was brilliant at following a fight plan; but when the plan was not working perfectly he could not adapt to plan B (AntufermoI/Duran/Leonard). And with Petronelli's in his corner it hardly helped matters...
nah pryor was a good boxer but his conditioning was better than his handspeed and hieght and ring skills so might as well put it to good use and impersonate a windmill.
carlos zarate anybody always in shape lanky very quick very good conditioning and and destructive one punch power a vey high p4p power rater