All-time great boxers who boxed through 4 decades?

[MartialMind]

There is George Foreman who fought pro in the 60s, 70s, 80s and 90s. Pac-Man will be there if he fight into the 2020's, 90s, 00s, 10s.

Any other notables?

[OctoberRed]

Holyfield? Hopkins almost made it.

Duran? 68-2001!

[The Old LefHook]

I forget his name but his nickname was Punchy.

[HeadBodyBodyBody]

RJJ
Archie Moore

[BattlingNelson]

Jack Johnson

[VegasMichael]

If we are remembering that a decade starts with a year ending in 1 then Julio Cesar Chavez(1980-2005). Hector Camacho fought from 1980-2010 although he probably isn't considered an all time great.

Alexis Arguello fought from 1968-1995 as well.

[Bundana]

If we are remembering that a decade starts with a year ending in 1 then Julio Cesar Chavez(1980-2005). Hector Camacho fought from 1980-2010 although he probably isn't considered an all time great.

Alexis Arguello fought from 1968-1995 as well.

Actually, a decade starts with a year ending in 0.
A century, on the other hand, starts with a year ending in 1.

[VegasMichael]

Actually, a decade starts with a year ending in 0.
A century, on the other hand, starts with a year ending in 1.

The Gregorian calendar begins with the year 1. (There was no year "zero", and the year before AD 1 is 1 BC with nothing in between.) Therefore, its first decade is from AD 1 to AD 10, the second decade from AD 11 to AD 20, and so on.[5] So, although "the 1960s" comprises the years 1960 to 1969, the years 1961 to 1970 comprise "the 197th decade" of the calendar, which can also be referenced as "the seventh decade of the 20th century".

[Bundana]

The Gregorian calendar begins with the year 1. (There was no year "zero", and the year before AD 1 is 1 BC with nothing in between.) Therefore, its first decade is from AD 1 to AD 10, the second decade from AD 11 to AD 20, and so on.[5] So, although "the 1960s" comprises the years 1960 to 1969, the years 1961 to 1970 comprise "the 197th decade" of the calendar, which can also be referenced as "the seventh decade of the 20th century".

Sorry, but you're wrong.

The 1960s decade started on January 1, 1960 - and ended on December 31, 1969.

https://en.wikipedia.org/wiki/1960s

[VegasMichael]

Sorry, but you're wrong.

The 1960s decade started on January 1, 1960 - and ended on December 31, 1969.

https://en.wikipedia.org/wiki/1960s

That quote I stated came from Wikipedia as well. So according to you the first decade AD 1-9 only had nine years. https://en.wikipedia.org/wiki/Decade