American sprint sensation Sha Carri Richardson has reportedly tested positive for a banned substance and is likely to miss out on her making her Olympic debut, according to multiple reports.

The 21-year-old American, who won the 100m at the US trials last month, returned an adverse analytical finding, following a test administered at the US Olympic Trials and marijuana was classified as a Substance of Abuse by the World Anti-Doping Agency (WADA) on January 1, 2021.

According to the reports, the use of this substance carries a maximum four-year ban.

However, if she can prove that the use of the drug was used outside of competition and was not intended to enhance performance, she could have the ban reduced to three months. It has also been reported that should she agree to undertake a treatment program, the ban could be reduced further.

As it stands, however, the athlete has been stripped of her performances at the US trials and fourth-place winner Jenna Prandini as well as Gabby Thomas have been notified that they could be potential replacements and have been entered in the 100m.

Richardson, the 2019 NCAA 100m champion, generated much excitement for a potential match up with two-time Olympic 100m champion Shelly-Ann Fraser-Pryce when she raced to a world-leading 10.72 100m in April. It was the fastest any woman had ever run so early in a season.

She followed it up with four more times under 10.8 seconds during the season.

When Fraser-Pryce, who is vying for an unprecedented third Olympic 100m title, ran a world-leading 10.63 on June 5, the excitement in anticipation of a blockbuster clash in Tokyo intensified.

Now it seems that that match up will not happen.

The best-case scenario for Richardson, should the ban remain in effect, is that she would be available to run on the USA’s 4x100m relay team at the Olympic Games in August if selected by USA Track and Field.