Muhammad Ali
Joe Louis
Larry Holmes


I also found some grate info for why are they considerd the best.


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1) Muhammad Ali- Was the quickest heavyweight of all time of hand and foot. Had the best chin in heavyweight championship history. Had an underrated punch as evidenced by his KOs of Oscar Bonavena and George Foreman, neither of which were previously or subsequently knocked out. Fought during what is arguably the best era of heavyweight boxing fighting the likes of: Sonny Liston, Floyd Patterson, Henry Cooper, Joe Frazier, Ken Norton, Jerry Quarry, Earnie Shavers, Ron Lyle, Bonavena, Jimmy Ellis, and George Foreman. Ali's longevity is magnificent. Historically, it is usually the power hitters who are able to hold on longer to their careers because it is said that a fighter's punch is the last thing to leave them while a boxer's skills, speed and reflexes, are the first to leave any fighter. Ali's forte was speed, mobility and reflexes, (although he had an underrated punch), yet he continued to succeed despite his eroding skills. That's very telling about the outstanding fighter he was.
2) Joe Louis- (Pictured knocking out Max Schemling in their historic rematch.) The longest reign of any heavyweight champion, (over 11 years), with the most title defenses, (25). I think most of his opposition would've taken a back seat to Ali's had they all been in the same eras. Jack Sharkey, Primo Carnera, Jimmy Braddock, and Tony Galento were nothing that great. Galento was a Golden Age punching bad/tough guy, and Braddock was a Golden Age Buster Douglas. The only greats Louis fought in his time were an ill-prepared Max Baer, Max Schemling and Jersey Joe Walcott. Even so, he possessed beautiful combinations and unparralleled punching power. A great fighter.
3) Larry Holmes- Probably the most underrated heavyweight of all time. Great record that included the 2nd longest reign, 2nd longest undefeated winning streak AND 2nd most title defenses. Outstanding jab and potent right hand. Opponents available during the time were talented but limited compared to Ali's. Norton, Shavers, Witherspoon, Cooney, Weaver, Bonecrusher Smith, Carl Williams, and I think he beat Michael Spinks in the rematch. I also think he was underrated during comeback. He beat some solid journeymen, such as Jesse Ferguson, and a god top fighter in Ray Mercer. I'm of the opinion that he beat McCall and Nielsen. As far as I'm concerned, he has 3 losses: Tyson (of course), the 1st Spinks fight, and Holyfield."