Lance Armstrong was stripped of his seven Tour de France titles this week for taking banned substances.
A 1,000 page report by the United States Anti-Doping Agnecy (USADA) concluded that Armstrong's United States Postal Service team ran "the most sophisticated, professionalised and successful doping programme that sport has ever seen," BBC Sport reported.
The evidence cited by the USADA included evidence from 11 of Armstrong's former teammates. The USADA has created an entire website dedicated to the Armstrong case. The evidence cited includes financial payments, emails, laboratory tests that "further prove the use, possession and distribution of performance enhancing drugs by Lance Armstrong."
Armstrong has continued to deny doping, although he declined comment to the New York Times Monday. The International Cycling Union also decided that no one would replace Armstrong as the winner of th Tour de France between 1999 and 2005, the Hartford Courant reported.
Armstrong's appeal as an iconic athlete transcended cycling in part because he overcame stage three testicular cancer, which he was diagnosed with when he was 25, the New York Times reported.
Armstrong's recovery from cancer and his success in the Tour de France made him an international celebrity. He founded the Livestrong Foundation, which grew into a $500 million anti-cancer charity, the Daily Beast reported. Armstrong resigned as chairman of the foundation this week.