The first boxer to hold heavyweight titles by all four sanctioning bodies was Riddick Bowe , at different times from 1992-95 .
A victory over Oscar De La Hoya for the WBO title in 2004 cemented Hopkins ' status as undisputed champion , while also making him the first male boxer to simultaneously hold world titles by all four major boxing sanctioning bodies ( Riddick Bowe was the first to hold heavyweight titles by all four , but in separate reigns , between 1992 and 1995 ) .
Bernard Hopkins