BEIJING, Aug. 6 (Xinhua) -- The Chinese Anti-Doping Agency (CHINADA) on Tuesday criticized the United States Anti-Doping Agency (USADA) for its handling of sprinter Erriyon Knighton's doping case, alleging a double standard by the U.S.
Knighton, a U.S. Olympic track and field team member, tested positive for the banned steroid trenbolone during an out-of-competition test on March 26. USADA decided not to impose
