U.S. athlete Sha’Carri Richardson compares her situation to that of Russian skater, suggests race is factor

Sha'Carri Richardson — the American sprinter who was barred from competing in the Tokyo Olympics last summer because she tested positive for the drug THC — suggested in a tweet that race is the reason she was unable to compete but Russian teenager Kamila Valieva, who also failed a drug test, is being allowed to skate in Beijing.