Why Lance Armstrong Says He Had to Dope to Win *OPRAH INTERVIEW*

Oprah's Next Chapter - Oprah Winfrey Network. Between 1999 and 2005, Lance Armstrong led the U.S. Postal Service Pro Cycling Team and, later, the Discovery Channel Pro Cycling Team to the top of the podium at the Tour de France seven consecutive times. Find out why Lance believes he and some of his teammates had to dope in order to win.