American champion Sha'Carri Richardson cannot run in the Olympic 100-metre race after testing positive for a chemical found in marijuana. Richardson, who won the 100 at Olympic trials in 10.86 seconds on June 19, spoke of her ban on the “Today" show. She tested positive at the Olympic trials and so her result is erased. The 21-year-old sprinter was expected to face Jamaica's Shelly-Ann Fraser-Pryce in one of the most highly anticipated races of the Olympic track meet. After the London Olympics, international regulators relaxed the threshold for what constitutes a positive test for marijuana from 15 nanograms per millilitre to 150 ng/m.

Source: Stuff July 02, 2021 18:22 UTC