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American Motorcyclist Association Announces Anti-Doping Test Results For AMA Supercross Competitors

Chaparral Motorsports
March 23, 2012
American Motorcyclist Association

The American Motorcyclist Association (AMA) reports that anti-doping testing was conducted at the San Diego (Feb. 11) and St. Louis (March 3) rounds of the AMA Supercross Championship.

No prohibited substances or their metabolites or markers, or the use of prohibited methods, were found in the tested samples.

AMA Supercross Lites class riders tested in San Diego were Dean Wilson, Matt Moss and Cole Seely.

AMA Supercross Lites class riders tested in St. Louis were Ken Roczen, Blake Wharton and Justin Barcia.

AMA Supercross class riders tested in San Diego were James Stewart, Justin Brayton and Ryan Dungey.

AMA Supercross class riders tested in St. Louis were Ryan Villopoto, Jake Weimer and Davi Millsaps.

About the American Motorcyclist Association
Since 1924, the AMA has protected the future of motorcycling and promoted the motorcycle lifestyle. AMA members come from all walks of life, and they navigate many different routes on their journey to the same destination: freedom on two wheels. As the world's largest motorcycling rights organization, the AMA advocates for motorcyclists' interests in the halls of local, state and federal government, the committees of international governing organizations, and the court of public opinion. Through member clubs, promoters and partners, the AMA sanctions more motorsports competition and motorcycle recreational events than any other organization in the world. AMA members receive money-saving discounts from dozens of well-known suppliers of motorcycle services, gear and apparel, bike rental, transport, hotel stays and more. Through the AMA Motorcycle Hall of Fame, the AMA honors the heroes and the heritage of motorcycling for future generations. For more information, please visit
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