Ex-teammate says Lance Armstrong injected EPO

FILE - Cyclist Lance Armstrong holds a news conference during the Clinton Global Initiative annual meeting Wednesday, Sept 24, 2008 in New York. (Jason DeCrow)

May 19, 2011 6:40:40 PM PDT
Tyler Hamilton, a former teammate of Lance Armstrong, told "60 Minutes" that he used performance-enhancing drugs with the seven-time Tour de France winner to cheat in cycling races, including the tour.