Sha’Carri Richardson suspended from US Olympic team after testing positive for marijuana

US track and field star Sha’Carri Richardson has been suspended for one month from the Olympic team after testing positive for THC, a chemical found in marijuana, the US Anti-Doping Agency (USADA) announced on Friday.US track and field star Sha’Carri Richardson has been suspended for one month from the Olympic team after testing positive for THC, a chemical found in marijuana, the US Anti-Doping Agency (USADA) announced on Friday.