Kalambay was a fine boxer..a very good fighter, but he would have lost to all three of the greats listed..by stoppages..
Kalambay beat some good guys, Barkley,Dewitt and McCallum, but he lost big to Nunn. He would lose to all of those guys. Now Hagler would have destroyed Kalambay usually, but I am not too sure the 1987 Hagler who fought Ray wouldn't have lost a decision to Kalambay. Marvin was a little washed up at that point and rusty. But the 1985 Hagler who fought Hearns stops Kalambay in the mid rounds.
Kalambay who is roughly the equal of Leonard at 160 would cave in before the speed and mastery of Roy Jones, a true Sugar Ray He would extend Monzon in a losing effort but makes it close and defeats the 1987 Hagler in a close fight
Monzon would have brutallized Kalambay before dispatching him..I'm talking peak Monzon, circa Briscoe or napoles..not the version of him just after his shooting incident, like as in Griffith II or Bouttier II. The Monzon of Valdez II would have stopped in in 9.
