24.1 There shall be no doping before or during play in any competition. For the purpose of these regulations, doping is the introduction into the body in any way of any of a list of prohibited substances as provided by the International Olympic Committee (IOC) and/or the United States Olympic Committee (USOC). A player who fails a doping test shall be subject to disciplinary action per the USATT Bylaws and Standing Rules. It is the athlete's responsibility to remain informed of lists of banned substances through the USOC Drug Hotline. As of this printing, the Hotline number is 800-233-0393.