United States sprinter Erriyon Knighton went to court Monday to defend his claim he was contaminated in a positive doping ...

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 ...

FILE - Erriyon Knighton, of the United States, reacts following his men's 200-meter semifinal at the 2024 Summer Olympics, on Aug. 7, 2024, in Saint-Denis, France.

FILE - Erriyon Knighton, of the United States, reacts following his men's 200-meter semifinal at the 2024 Summer Olympics, on Aug. 7, 2024, in Saint-Denis, France.

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 ...

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 ...