who was the greatest heaveyweight boxer of all time?

1. Louis

2. Marciano

3. Dempsey

4. Ali

5.Holmes

Easily Rocky Marciano! Ali was a bum who needed a decision to beat Chuck Woeppner! The dude was a huge underdog and went the distance against the greatest "bum" Ali. 5 Losses for Ali, 0 Losses for Marciano, end of debate!!! Rocky Marciano!

What's with all the Ali nut-hugging? You know why people call him the greatest? Because he said it so many times.

1. Louis

2. Marciano

3. Holmes

4. Demsey

5. Liston

Joe Louis, longest champion ever with 27 title defenses and 23 of them were by knockout. He lost only 3 times in his whole pro career. The second greatest heavyweight in my list is Muhammad Ali. Ali has fought so many heavyweight contenders and defeated every boxer he has fought (Norton, Frazier, and Spinks by rematch) except his last two because he was already diagnosed with parkensons (Holmes and Berbick).

Ali #1 and second Joe Louis and rocky Marciano beat Louis because Louis was old. a good brawler like Tyson would have beaten that slugger in his prime any day of the week rocky got hit too easy he didn't know how to box when he fights he just looks for that right hand to land and end the fight ROCKY MARCIANO = over rated = lucky.

Muhammad Ali, even some of the fighters he beat would be in the top ten, ( Foreman, Frazier, Liston ), then there were the likes of Shavers, Lyle, Norton, Patterson, Quarry, Cooper. Could Marciano or Louis opponents be put in the same category as the ones who fought Ali.

1. Ali

2. Louis

3. Holmes

4. Lewis

5. Johnson

6. Foreman

7. Dempsey

8. Tyson

9. Liston

10. Marciano

11. Frazier

12. Holyfield

Ali IS the G.O.A.T. He did more for the sport than anyone. Also, he was champ during the Super 70's. He faced and defeated some of the toughest competition ever.

Rocky Marciano. The record proves it

Ali is the greatest he said it himself, he lost some of his best years because he stood up for what he believed.

Joe Louis is 2nd

3rd Marciano. Undefeated retired kinda early but i wont hold it against him.

the greatest heavyweight boxer of all time is muhammad Ali hands down there no other boxer better then him period Ali is like the jay z of rapping the Michael Jordan of basketball he is the greatest because he fly like an butter fly stings like a bee his name is Muhammad Ali