 His victories over Jack Dillon, and later fellow claimant Georges Carpentier and former champion Billy Papke in France, cemented his claim to the title.He was officially recognized as champion by sanctioning bodies on March 5, 1913.In his historic title bout against Georges Carpentier on June 24, 1912 in Dieppe, France, Klaus won on a nineteenth round disqualification when Carpentier's manager entered the ring to protest his boxer being elbowed repeatedly by Klaus.