Claressa Shields Tests Positive for Marijuana

American boxer Claressa Shields is currently under investigation after testing positive for marijuana following her victory over heavyweight Danielle Perkins on February 3rd in Michigan. The 29-year-old, a three-weight undisputed champion, has been suspended from fighting in the state by the Michigan Unarmed Combat Commission.

Details of the Test

Shields tested positive after providing an "oral fluid sample" post-fight. Marijuana is banned in-competition by the World Anti-Doping Agency (WADA), which raises significant concerns about her eligibility and the integrity of the sport.

Previous Cases and Consequences

This incident echoes the case of American sprinter Sha'Carri Richardson, who missed the Tokyo Olympics in 2021 after receiving a one-month ban due to a positive marijuana test. The WBO, a sanctioning body, has requested a "show notice" from Shields, asking her to explain herself, while the Michigan Commission has opened its own investigation to determine if disciplinary action is warranted.

Michigan Commission’s Statement

The Michigan Commission stated, "Ms. Shields' conduct as a licensed professional boxer constitutes an imminent threat to the integrity of professional boxing, the public interest, and the welfare and safety of professional athletes."

Shields’ Response

Last week, Shields addressed rumors of a failed drugs test on social media, asserting that she is a "clean athlete". BBC Sport has reached out to Shields for further comment.

WBC’s Clean Boxing Programme

Under the WBC's Clean Boxing Programme, both Shields and Perkins were subject to drug testing by the Voluntary Anti-Doping Agency (VADA). This programme aims to ensure the integrity and safety of professional boxing.

Shields’ Career Highlights

Shields, who won gold at the Olympics at the age of 17, has had a remarkable career. She is undefeated in 16 fights and was the first boxer, male or female, to win undisputed titles in three different weights in the four-belt era.

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