Sha’Carri Richardson, a Track Sensation, Tests Positive for Marijuana

It was unclear whether the sprinter, who won the women’s 100-meter race at the U.S. Olympic trials, would be allowed to compete in the Tokyo Games.

The American sprinter Sha’Carri Richardson, who was set for a star turn at the Tokyo Olympics this month, could miss the Games after testing positive for marijuana. Richardson, 21, won the women’s 100-meter race at the U.S. track and field trials in Oregon last month, but her positive test automatically invalidated her result in that event. It is unclear if Richardson will appeal the test result and the disqualification, or how long her suspension will be. It could be as short as one month, which might clear her in time to run in events that take place later in the Games — if she is named to the U.S. team.