American sprinter Sha’Carri Richardson, a medal favorite in the 100-meter dash at the upcoming Olympics, tested positive for marijuana last month and won't be able to run her signature race at the Tokyo Games.
The U.S. Anti-Doping Agency announced Friday morning that Richardson had accepted a one-month suspension after testing positive for THC, the primary psychoactive compound of cannabis. The positive test occurred after Richardson won the 100 at U.S. Olympic Trials on June 19.
She has been retroactively disqualified from trials, and her place in the event in Tokyo has been handed to the fourth-place finisher, Jenna Prandini.