Lance Armstrong's doping denials through the years

"Everybody wants to know: what am I on. What am I on? I'm on my bike, busting my ass six hours a day." - commercial for Nike in 2001.

Photo: A Nike Livestrong shirt and poster of cyclist Lance Armstrong are displayed in the window at a NikeTown store May 15, 2009 in San Francisco, California.

Credit: Photo by Justin Sullivan/Getty Images