Claim: Waldemar Holberg, who won the World Welterweight Championship on January 1, 1914, recorded a total of 70 career fights in which 28 were lost via knockout.
Evidence: Born in Copenhagen, Denmark on May 29, 1883, he won the World Welterweight Championship on January 1, 1914, defeating Ray Bronson in Melbourne, Australia in a twenty round points decision. 70 28