RANK

BOXER

WEIGHT CLASS

YEARS

1

Sugar Ray Robinson

Welterweight / Middleweight

1940–1965

2

Muhammad Ali

Heavyweight

1960–1981

3

Joe Louis

Heavyweight

1934–1951

4

Henry Armstrong

Featherweight / Lightweight / Welterweight

1931–1945

5

Harry Greb

Middleweight

1913–1926

6

Willie Pep

Featherweight

1940–1966

7

Jack Johnson

Heavyweight

1897–1938

8

Sam Langford

Middleweight / Heavyweight

1902–1926

9

Roberto Duran

Lightweight / Welterweight / Middleweight

1968–2001

10

Benny Leonard

Lightweight

1911–1932

11

Ezzard Charles

Heavyweight

1940–1959

12

Sugar Ray Leonard

Welterweight / Middleweight

1977–1997

13

Archie Moore

Light Heavyweight

1935–1963

14

Floyd Mayweather Jr.

Super Featherweight / Lightweight / Welterweight

1996–2017

15

Jimmy Wilde

Flyweight

1911–1923

16

Manny Pacquiao

Flyweight / Lightweight / Welterweight

1995–2021

17

Abe Attell

Featherweight

1900–1917

18

Barney Ross

Lightweight / Welterweight

1929–1938

19

Marvin Hagler

Middleweight

1973–1987

20

Pernell Whitaker

Lightweight / Welterweight

1984–2001

21

Julio Cesar Chavez

Lightweight / Light Welterweight

1980–2005

22

Gene Tunney

Heavyweight

1915–1930

23

Larry Holmes

Heavyweight

1973–2002

24

Rocky Marciano

Heavyweight

1947–1955

25

Jack Dempsey

Heavyweight

1914–1927

26

Carlos Monzon

Middleweight

1963–1977

27

Tony Canzoneri

Lightweight / Welterweight

1925–1939

28

Mickey Walker

Welterweight / Middleweight

1919–1935

29

Bob Fitzsimmons

Middleweight / Heavyweight

1885–1914

30

Sandy Saddler

Featherweight

1944–1956

31

Jimmy McLarnin

Welterweight

1923–1936

32

Joe Gans

Lightweight

1893–1909

33

Eder Jofre

Bantamweight / Featherweight

1957–1976

34

Charley Burley

Welterweight / Middleweight

1936–1950

35

George Foreman

Heavyweight

1969–1997

36

Billy Conn

Light Heavyweight

1934–1948

37

Young Corbett III

Welterweight

1929–1940

38

Bernard Hopkins

Middleweight / Light Heavyweight

1988–2016

39

Stanley Ketchel

Middleweight

1903–1910

40

Salvador Sanchez

Featherweight

1975–1982

41

Joe Frazier

Heavyweight

1965–1981

42

Alexis Arguello

Featherweight / Lightweight

1968–1995

43

Ike Williams

Lightweight

1940–1955

44

Kid Gavilan

Welterweight

1943–1958

45

Young Stribling

Light Heavyweight / Heavyweight

1921–1933

46

Lou Ambers

Lightweight

1932–1941

47

Wilfredo Gomez

Super Bantamweight / Featherweight

1974–1989

48

Tommy Loughran

Light Heavyweight

1919–1937

49

Manuel Ortiz

Bantamweight

1938–1955

50

Tommy Ryan

Welterweight / Middleweight

1887–1907