These are the best fighters to ever step into the ring:
Top 50 in Their Prime
1 Muhammad Ali 1964-1975
2 George Foreman 1970-1976
3 Mike Tyson 1986-1990
4 Joe Louis 1935-1942
5 Joe Frazier 1968-1973
6 Lennox Lewis 1995-2002
7 Jack Johnson 1903-1912
8 Evander Holyfield 1990-1997
9 Sonny Liston 1960-1964
10 Larry Holmes 1978-1983
11 Rocky Marciano 1951-1955
12 Ken Norton 1973-1978
13 Riddick Bowe 1991-1995
14 Ike Ibeabuchi 1997-1999
15 Vitali Klitshcko 2003-2011
16 Jack Dempsey 1919-1923
17 Wladimir Klitschko 2006-2014
18 Floyd Patterson 1956-1962
19 Ezzard Charles 1948-1954
20 Gene Tunney 1925-1928
21 Harry Wills 1916-1921
22 Jersey Joe Walcott 1946-1952
23 Jim Jeffries 1898-1903
24 Bob Fitzsimmons 1892-1902
25 Michael Spinks 1985-1988
26 John L. Sullivan 1882-1886
27 Ingemar Johansson 1957-1961
28 Tim Witherspoon 1983-1991
29 Michael Moorer 1994-1997
30 Jerry Quarry 1967-1973
31 Max Baer 1932-1935
32 Buster Douglas 1986-1990
33 Max Schmeling 1929-1936
34 Ray Mercer 1991-1996
35 Oscar Bonavena 1966-1971
36 Andrew Golota 1996-2004
37 Jimmy Bivins 1942-1946
38 Jimmy Young 1974-1977
39 Ron Lyle 1972-1976
40 Gerry Cooney 1979-1982
41 Carl Williams 1985-1989
42 Tommy Morrison 1992-1995
43 Jack Sharkey 1926-1932
44 Jimmy Ellis 1967-1971
45 Frank Bruno 1987-1995
46 James Braddock 1934-1937
47 Primo Carnera 1930-1934
48 Tony Tubbs 1985-1992
49 Philadelphia Jack O’Brien 1902-1909
50 Archie Moore 1947-1955