John l Sullivan-1885-1892
James J Corbet 1892-1897
Bob Fitzsimmons 1897-1899
James J Jefries 1899-1905 ret
Marvin Hart 1905-1906
Tommy Burns 1906-1908
Jack Johnson 1908-1915
Jess Willard 1915-1919
Jack Dempsey 1919-1926
Gene Tunney 1926-1928 ret
Max Schmelling 1930-1932
Jack Sharky 1932-1933
Primo Carnera 1933-1934
Max Baer 1934-1935
James J Braddock 1935-1937
Joe Louis 1937-1949 ret
Ezzard Charles 1949-1951
Joe Wallcott 1951-1952
Rocky Marciano 1952-1956 ret
Floyd Patterson 1956-1959
Ingemar Johansson 1959-1960
Floyd Patterson 1960-1962
Sonny Liston 1962-1964
Cassius Clay 1964-1970
Joe Frazier 1970-1973
George Foreman 1973-1974
Muhammad Ali 1974-1978
Leon Spinks 1978
Muhammad Ali 1978-1979ret
Larry Holmes 1980-1985
Michel Spinks 1985-1988
Mike Tyson 1988-1990
James Douglas 1990
Evander Holyfield 1990-1992
Riddock Bowe 1992-1993
Evander Holyfield 1993-1994
Michael Moorer 1994
George Foreman 1994-1997
Shannon Briggs 1997-1998
Lennox Lewis 1998-2001
Hasim Rahman 2001
Lennox Lewis 2001-2004 ret
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