Donald Trump Jr finances the Enhanced Games, a proposed competition where doping is allowed - Ex-Man Utd star takes responsibility for failed doping test - China hits back at the U.S. in response to doping allegations dogging its swimmers - China hits back at the US in response to doping allegations dogging its swimmers - China targets U.S. track athletes in response to doping allegations dogging its swimmers - Adam Peaty questions if Chinese swimmers are taking doping tests 'like I am' - Chinese Olympic swimmer says doping testers are part of a 'European and American' plot - Eddie Hearn: Ryan Garcia accepted doping charge to get favorable deal with the NY Athletic Commission - Katie Ledecky on sports doping and the Paris Olympics - Katie Ledecky says faith in some of the systems that prevent doping in sports is 'at an all-time low'