American sprint star Sha’Carri Richardson to miss Olympic 100m over failed drugs test

The 21-year-old 100 metres star tested positive for THC during last month’s US Olympic trials

Sha’Carri Richardson has been suspended for one month after testing positive for a substance of abuse (Ashley Landis/AP)

American sprint star Sha’Carri Richardson is out of the 100 metres at the Tokyo Olympics after her trials success was wiped out following a positive test for a substance of abuse.

The United States Anti-Doping Agency (USADA) announced on Friday that the 21-year-old had been suspended for one month after testing positive on June 19 for THC, the main psychoactive constituent in cannabis. The sample was provided on the day of her win at the trials.