United States sprinter Erriyon Knighton went to court Monday to defend his claim he was contaminated in a positive doping test case that risks a ban from the next world championships. A two-time Olympic finalist in the 200 meters aged just 21, Knighton was cleared to run at the Paris Summer Games last year only after an American tribunal ruled he was not at fault for the positive test for trenbolone, a steroid used in livestock farming. The World Anti-Doping Agency and track and field’s Athletics Integrity Unit have challenged that ruling in combined appeals to the Court of Arbitration for Sport.Read More
