Lance Armstrong is face of Livestrong

In this Aug. 22, 2010, file photo, cyclist Lance Armstrong greets fellow riders prior to the start of his Livestrong Challenge 10K ride for cancer in Blue Bell, Pa.

A "LIVESTRONG" bracelet is worn in this photo August 3, 2004. In late May 2004, Nike and the Lance Armstrong Foundation joined forces and created the bracelet campaign with five million bright yellow wristbands bearing the word "LIVESTRONG."

Lance Armstrong reaches out for someone wearing a yellow "Livestrong" wristband as he rides in a parade in his honor Aug. 13, 2004, in Austin.

A mural is seen on the Lance Armstrong foundation building Aug. 24, 2012, in Austin. The U.S. Anti-Doping Agency stripped Armstrong of his seven Tour de France titles, erasing one of the most incredible achievements in sports after deciding he had used performance-enhancing drugs to do it.

Lance Armstrong during stage four of the 2009 Tour de France.

Lance Armstrong gives a Livestrong hat to Sporting Kansas City owner Cliff Illig during an MLS news conference in Kansas City, Kan., on March 8, 2011. The soccer team's new stadium will be named Livestrong Sporting Park.

Sen. John McCain, R-Ariz., and Lance Armstrong hold a news conference after they participate in the LIVESTRONG Summit at The Ohio State University in Columbus, Ohio, on July 24, 2008.

Former U.S. President Bill Clinton stands with Lance Armstrong during the opening session of the Clinton Global Initiative (CGI) Sept. 24, 2008 in New York City.

Here's a photo of part of Lance Armstrong's bicycle from the 2009 Tour de France.

Lance Armstrong signs autographs for supporters after a run Aug. 29, 2012, on Mont Royal Park in Montreal.

In a file photo from May 17, 1998, Lance Armstrong poses before riding in a criterium in downtown Austin. The events were to benefit the Lance Armstrong Foundation.

Seven-time Tour de France champion Lance Armstrong gestures while talking to reporters during news conference in New York on May 23, 2006.

A fan holds a placard reading "Go Lance Livestrong" to support Lance Armstrong as she waits for riders during the 12th stage of the 2010 Tour de France on July 16, 2010.