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.
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 
