Ohh damn forgot about when the black fighters could only fight each other, I thought you meant in recent times
Pretty sure he (Langford) fought Wills 20-something times, but I'm not certain if that's the most. But I'll stick with that guess until someone disproves it. :smoke
From Wiki 'Wills fought the redoubtable Sam Langford 22 times. His record against Langford was 6 wins, 2 losses and 14 No Decisions, although the two losses were by knockout'
Ted ''Kid Lewis'' vs Jack Britton From 1915 to 1921 Lewis and Britton fought 20 times, a total of 224 rounds
Sam Langford vs Harry Wills 18-22 times Ted Lewis vs Jack Britton 20 times Sam Langford vs Joe Jeanette 13-15 times Sam Langford vs Sam McVey 13 times Holman Williams vs Cocoa Kid 13 times Benny Leonard vs Johnny Dundee 8 times Jack Johnson vs Joe Jeanette 7 times Archie Moore vs Jack Chase 7 times Charley Burley vs Holman Williams 7 times Harry Greb vs Tommy Loughran 6 times Ray Robinson vs Jake LaMotta 6 times Harry Greb vs Battling Levinsky 6 times Gene Tunney vs Harry Greb 5 times Henry Armstrong vs Baby Arizmendi 5 times Archie Moore vs Harold Johnson 5 times Ezzard Charles vs Jimmy Bivins 5 times Ezzard Charles vs Joey Maxim 5 times Ray Robinson vs Gene Fullmer 4 times Ray Robinson vs Bobo Olson 4 times Sandy Saddler vs Willie Pep 4 times Ezzard Charles vs Jersey Joe Walcott 4 times Manny Pacquiao vs Juan Manuel Marquez 4 times Bobby Chacon vs Bazooka Limon 4 times Israel Vasquez vs Rafael Marquez 4 times Pongsaklek Wonjomkang vs Daisuke Naito 4 times Kid Gavilan vs Billy Graham 4 times Stanley Ketchel vs Billy Papke 4 times Jake LaMotta vs Fritzie Zivic 4 times Emile Griffith vs Luis Manuel Rodriguez 4 times Freddie Welsh vs Charley White 4 times Harry Greb vs Tommy Gibbons 4 times
Do you mean which rivalry had the most, or which boxer participated in the most rematches? If the latter, Harry Greb fought in 158.
