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Sean O’Malley Accepts Sanction for Second Violation of UFC Anti-Doping Policy

UFC glove with USADA UFC logo overlaidUSADA announced today that Sean O’Malley, of Phoenix, Ariz., has tested positive for a prohibited substance and accepted a reduced six-month sanction, consistent with other supplement contamination cases, for his second anti-doping policy violation.

O’Malley, 25, tested positive for ostarine as the result of out-of-competition urine samples he provided on August 6, 2019 and August 12, 2019. His two positives, as well as additional positives collected after August 12, 2019, were treated as a single violation because the estimated concentration of ostarine in the urine samples was consistent with ingestion prior to August 29, 2019, the date O’Malley received notification of his second violation. In addition, the pattern of low urinary ostarine concentrations observed in multiple samples provided by O’Malley was consistent with exposure to ostarine as a contaminant. Ostarine is a non-Specified Substance in the class of Anabolic Agents and prohibited at all times under the UFC Anti-Doping Policy and UFC Prohibited List.

After a thorough investigation into O’Malley’s positive tests, including extensive follow-up testing, his agreement to keep a food log, his increased level of care in selecting supplements, and finding no evidence of intentional use, USADA resolved O’Malley’s case with a six-month period of ineligibility. O’Malley’s period of ineligibility began on August 6, 2019, the date his positive sample was collected.

Ostarine, also known as MK-2866 and Enobosarm, is a selective androgen receptor modulator (SARM) that is illegally sold worldwide as a performance-enhancing substance. Ostarine is not currently available as a prescription medication in any country, and its unauthorized use may carry serious side effects. Nonetheless, ostarine has commonly been found as a declared and undeclared ingredient in many dietary supplements.

More information about the risks of ostarine can be found through a USADA athlete advisory. USADA’s athlete advisory recognizes the demonstrated prevalence of ostarine in a wide range of supplement products used by athletes (see USADA High Risk List for more than 70 products) and that ostarine has frequently been found as a product contaminant.

USADA conducts the year-round, independent anti-doping program for all UFC athletes. USADA is an independent, non-profit, non-governmental agency whose sole mission is to preserve the integrity of competition, inspire true sport, and protect the rights of clean athletes. In an effort to aid UFC athletes, as well as their support team members, in understanding the rules applicable to them, USADA provides comprehensive instruction on the UFC Anti-Doping Program website (https://UFC.USADA.org) regarding the testing process and prohibited substances, how to obtain permission to use a necessary medication, and the risks and dangers of taking supplements, as well as performance-enhancing and recreational drugs.

In addition, the agency manages a drug reference hotline, Drug Reference Online (https://UFC.GlobalDRO.com), conducts educational sessions, and proactively distributes a multitude of educational materials, such as the Prohibited List, easy-reference wallet cards, and periodic athlete alerts. Many of the resources available to athletes are provided in multiple languages, including Russian, Spanish, French, Portuguese, Korean, and Japanese.

Along with education and testing, robust anti-doping programs enable investigations stemming from tips and whistleblowers. USADA makes available a number of ways to report the abuse of performance-enhancing drugs in sport in an effort to protect clean athletes and promote clean competition. Any tip can be reported using the USADA Play Clean Tip Center, by email at playclean@usada.org, by phone at 1 877-Play Clean (1-877-752-9253), or by mail.


For more information or media inquiries, email media@usada.org.

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