Olympic 200m finalist facing further doping investigation

Knighton, who placed fourth at the Olympic men’s 200m final, is now the subject of further by the Athletics Integrity Unit

72-year-old runner receives three-year doping ban for multiple substances

This renowned U.S. masters age-group runner’s urine sample came up positive for four banned substances

U.S. sprinter Erriyon Knighton’s Olympic dreams stay alive after doping suspension lifted

“Knighton’s positive test was more likely than not caused by consuming meat contaminated with trenbolone,” says USADA report