The claim
He never used performance-enhancing drugs. He sued accusers, called them liars, and passed drug tests.
Made in: Public statements, press conferences, and lawsuits
The proof
The U.S. Anti-Doping Agency found Armstrong engaged in "the most sophisticated, professionalized and successful doping program that sport has ever seen." An arbitration panel found he committed fraud and stripped him of all seven Tour de France titles. He later admitted doping.
The record
USADA v. Armstrong — American Arbitration Association (confirmed by U.S. District Court, District of Colorado) · No. 1:12-cv-02839
Outcome: Lifetime ban from Olympic sport; stripped of all titles since August 1998; $10 million in damages
A binding arbitrator ruled against the person on the disputed claim, and a court confirmed the award.
Armstrong denied doping for over a decade, sued the Sunday Times for $100 million, and called accusers liars. The arbitration finding was that he "committed the most serious violations of anti-doping rules in the history of sport." He admitted doping in a 2013 interview with Oprah Winfrey.