 Mosley would later admit to using performance-enhancing drugs from BALCO for this bout, saying he thought they were legal supplements.De la Hoya next challenged Felix Sturm (20–0) for the WBO middleweight title, on June 5, 2004, with the winner also getting a shot at the undisputed world middleweight champion Bernard Hopkins.De La Hoya was awarded a unanimous decision, becoming the first boxer in history to win world titles in six different weight divisions.