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American sprinter Sha'Carri Richardson has accepted a one-month suspension after testing positive for cannabis, the United States Anti-Doping Agency said on Friday, ruling her out of the 100 metres in Tokyo although she may yet be able to run in later relay events.
The positive test came at the U.S. Olympic trials last month where Richardson established herself as a gold medal contender by winning the 100m in 10.86 seconds.