Sha'Carri Richardson won 100m in the US trials in Oregon, JuneSha'Carri Richardson, a US sprinter, has been banned for one month after testing positive. He will miss the Tokyo Olympics.The 21-year old won the 100m at US Olympic trials in Oregon in May and earlier this year ran the sixth fastest time in history.However, the positive test result of the Texan means that her qualification result was extinguished.She said, "Don't judge, I'm human, I just happen run a little faster," to Today on NBC.At the Olympic trials, the athlete passed with flying colors. She finished in 10.86secs.Richardson said that she used cannabis to cope with the loss of her biological mother a week prior to the trials.She said that she was sorry for not being able to control my emotions and deal with it during the time.Richardson was giving an interview when the US Anti-Doping Agency, Usada announced that she had been suspended for "a substance of abuse" and not for performance enhancement.Travis Tygart, chief executive of Usada, stated that "the rules are clear but this is heartbreaking at many levels.""Hope her acceptance of responsibility will set an example for us all, that we can overcome regrettable decisions, even if they have costly consequences."The ban begins on the 28th of June, the date she was temporarily suspended.She could theoretically be allowed to compete at the Olympics, as her suspension expires before Tokyo's track-and-field programme begins on 30 Jul.However, her trials results were wiped out and Usada stated that her eligibility for Tokyo would be decided by the US Track and Field (USATF), and the US Olympic and Paralympic Committee.Richardson answered a question about whether she still hopes to participate in the Games and said that she would be focusing on herself. She also suggested she wouldn't be competing in Tokyo."I deeply apologise for letting you guys down. She added that this will be the last time that the US returns home without a 100m gold."I'm 21 years old, and I have a lot of Games to play. I also have a lot of talent. Everything I do is natural to me. No steroids."This was a marijuana-related incident so I will be returning after my sanction expires. "This will never happen again. Next time I walk on the track, I'll be ready to receive any anti-doping agency [they will] need.USATF stated that it would support the sprinter.It stated that Sha'Carri Richardson is in a very unfortunate and debilitating situation. USATF continues to prioritize athlete health and well-being. We will work with Sha'Carri in order to provide her with the resources she needs to deal with any future mental health issues.The World Anti-Doping Agency has banned cannabis for up to four years.If athletes can prove that the injury was not related to their sport performance, this can be reduced to two months.A ban of one month can be reduced if athletes agree with a treatment program.