How about Angel Robinson Garcia with 13 when there were less champs Billy Backus Wilfred Benitez Eddie Perkins Saoul Mamby Esteban DeJesus Roberto Duran Jose Duran Pedro Carrasco Ken Buchanan Carmelo Bossi Bruno arcari Ismael Laguna Jose Napoles
How are we looking at this? In world title fights? For some reason Fritzie Zivic was the first guy I thought of, let me look him up and I'll get back to you.
James Tillis lost to Weaver, Thomas, Page, Witherspoon, Coetzee, Tyson, Bruno, Holyfield, and Morrison... 9 different world champs! Holyfield lost to Bowe x2, Moorer, Lewis, Ruiz, Byrd, Toney, Ibragimov, and Valuev... 8 different world champs, 9 losses... and 2 draws. Bert Cooper lost to Foreman, Mercer, Bowe, Holyfield, Moorer, Weaver, Sanders, and Byrd... 8 different world champs. Harold Brazier lost to 7 Reggie Strickland lost to 6... surprisingly. Jerry Quarry lost to Ellis, Frazier x2, Ali x2, and Norton... he also drew with Patterson... 6 losses and a draw. James Tillis lost to Weaver, Thomas, Page, Witherspoon, Coetzee, Tyson, Bruno, Holyfield, and Morrison... 9 different world champs!
Iran Barkley lost to 9 world champs- some huge names in his resume Benn, Nunn, Toney, Kalumbay, Duran and even Berbick.