What boxers had/have legendary endurance/stamina?

[DJR005]

I was just watching a documentary on Marciano where numerous ATG and HOF fighters said that his stamina was one of the reasons he was so successfull. What fighters in your mind have the stamina that is unmatched by many of the fellow prize fighters: my top. 5 are ( 2-5 no particular order)
1- rocky Marciano
2- Floyd Mayweather
3- Manny Pacquiao
4- Antonio Margarito
5- Marvin Hagler

[Slyboots]

Paul Williams.

[racer59]

Ones who went 15 rounds.

[Psylence83]

Canelo......

[removed]

Carl Froch

[SilverMiles]

Manny Pacquiao
Sugar Ray Leonard
Julio Cesar Chavez

[Ham Porter]

It's a lot easier to have "legendary stamina" when you're so economical with your output.

[Luilun]

I was just watching a documentary on Marciano where numerous ATG and HOF fighters said that his stamina was one of the reasons he was so successfull. What fighters in your mind have the stamina that is unmatched by many of the fellow prize fighters: my top. 5 are ( 2-5 no particular order)
1- rocky Marciano
2- Floyd Mayweather
3- Manny Pacquiao
4- Antonio Margarito
5- Marvin Hagler

Roberto Duran , Salvador Sanchez had better stamina than any of these guys. I recall watching Sanchez fight the first round or the 15th round as if they were the same. These guys did this without steroids or Ariza shakes. As you can see from your list number 2 and 3 both have ties to HGH and steroids

[White_Knight]

It's a lot easier to have "legendary stamina" when you're so economical with your output.

Also, when you don't punch hard.

Considering how hard Tyson punched, I'd say he has very good stamina.

[DreamFYS]

truly legendary stamina should include fighters only from when 15 rounders were fought. that's legendary stamina