US TAEKWONDO ATHLETE, TADD, RECEIVES SANCTION FOR DOPING VIOLATION
Colorado Springs, Colo. (November 17, 2011) USADA announced today that Nathaniel Tadd of Houston, Texas, an athlete
in the sport of Taekwondo, has tested positive for a prohibited substance and received a suspension for his doping offense.
Tadd, 20, tested positive for methylhexaneamine, a stimulant, as a result of a urine sample collected at the Senior Nationals
competition, on July 3, 2011, in San Jose, Calif. Stimulants are prohibited under the USADA Protocol for Olympic Movement
Testing and the rules of the World Taekwondo Federation, both of which have adopted the World Anti-Doping Code and the
World Anti-Doping Agency Prohibited List.
Tadd received a two-year period of ineligibility, which began on November 16, 2011, the day he received his sanction. As a
result of the sanction, Tadd is also disqualified from all results obtained during the Senior Nationals, which began on June
28, 2011, as well as any other competitive results obtained subsequent to June 28, 2011, including forfeiture of any medals,
points, and prizes.
USADA issued an athlete advisory on June 16, 2011 to make athletes aware of the concerns regarding methylhexaneamine.
That advisory can be found on the USADA website at http://www.usada.org/media/methylhexaneamine-and-dietary-
In an effort to aid athletes, as well as all support team members such as parents and coaches, in understanding the rules
applicable to them, USADA provides comprehensive instruction on its website on 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 (www.GlobalDRO.com), conducts educational sessions with National Governing Bodies and their athletes,
and proactively distributes a multitude of educational materials, such as the Prohibited List, easy-reference wallet cards,
periodic newsletters, and protocol and policy reference documentation.
USADA is responsible for the testing and results management process for athletes in the U.S. Olympic and Paralympic
Movement, and is equally dedicated to preserving the integrity of sport through research initiatives and educational
Annie Skinner, Media Relations Manager
Phone: (719) 785-2046
United States Anti-Doping Agency
Tel: 719.785.2000 • Fax: 719.785.2001
email@example.com • www.usada.org