Runner failed to prove banned substance came from burrito, sport's court says

Distance runner Shelby Houlihan’s case went ahead in secret for five months and was published just days before the start of U.S. Olympic track and field trials. Shelby Houlihan, the American record holder in the 1,500 and 5,000 meters, was banned for four years after failing to prove that tainted pork caused her positive test […]