World Anti-Doping Agency (WADA) chief Dick Pound Thursday said he wanted an audit of all doping tests that U.S. sprinter Marion Jones had passed before she admitted in October to taking performance-enhancing drugs.
Jones, who won five medals including three golds at the Sydney 2000 Olympics, had tested negative for drugs in 160 tests.
"It is not much fun to find that someone who has been tested 160 times admits to doping," Pound, attending the World Conference on Doping in Sport, said.

Marion Jones lowers her head while speaking to the media after leaving the U.S. Federal Courthouse in White Plains, New York Oct. 5, 2007. Jones will be remembered as one of the biggest frauds in sporting history, the president of the International Association of Athletics Federations (IAAF) said on Saturday. (Xinhua/Reuters Photo) "We would like an audit of these tests. What was she tested for, how many in and out-of competition," Pound said. "I am not happy to hear that someone who had so many tests was a user for so many years."
Source: Xinhua