Based on activity between top fighters and overall talent.
1885-1905
John L Sullivan
Bob Fitzsimmons
Jim Jeffries
James J Corbett
Paddy Ryan
1905-1925
Jack Dempsey
Jack Johnson
Gene Tunney*(1926)
Sam Langford
Harry Wills
1925-1945
Joe Louis
Max Schmelling
Max Baer
Primo Carnera
Jack Sharkey
1945-1965
Rocky Marciano
Sonny Liston
Floyd Patterson
Jersey Joe Walcott
Ezzard Charles
1965-1985
Muhammad Ali
George Foreman
Larry Holmes
Joe Frazier
Ken Norton
1985-2005
Lennox Lewis
Mike Tyson
Evander Holyfield
Riddick Bowe
Michael Spinks
2005-2025
TBD
Vitali Klitschko
Wladimir Klitschko
TBD
TBD
1885-1905
John L Sullivan
Bob Fitzsimmons
Jim Jeffries
James J Corbett
Paddy Ryan
1905-1925
Jack Dempsey
Jack Johnson
Gene Tunney*(1926)
Sam Langford
Harry Wills
1925-1945
Joe Louis
Max Schmelling
Max Baer
Primo Carnera
Jack Sharkey
1945-1965
Rocky Marciano
Sonny Liston
Floyd Patterson
Jersey Joe Walcott
Ezzard Charles
1965-1985
Muhammad Ali
George Foreman
Larry Holmes
Joe Frazier
Ken Norton
1985-2005
Lennox Lewis
Mike Tyson
Evander Holyfield
Riddick Bowe
Michael Spinks
2005-2025
TBD
Vitali Klitschko
Wladimir Klitschko
TBD
TBD
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