FILE - In this Oct. 16, 2012, file photo, Travis Tygart, the 

FILE - In this Oct. 16, 2012, file photo, Travis Tygart, the CEO of the U.S. Anti-Doping Agency, speaks during an interview at his office in Colorado Springs, Colo. Admitting he cheated was a start. Now, it's all about whether Armstrong is ready to give details, lots of them, to clean up his sport. Tygart, who will have the biggest say about whether Armstrong can return to competition, called his confession a small step in the right direction. (AP Photo/Ed Andrieski, File)
Associated Press
FILE - In this Oct. 16, 2012, file photo, Travis Tygart, the CEO of the U.S. Anti-Doping Agency, speaks during an interview at his office in Colorado Springs, Colo. Admitting he cheated was a start. Now, it's all about whether Armstrong is ready to give details, lots of them, to clean up his sport. Tygart, who will have the biggest say about whether Armstrong can return to competition, called his confession a small step in the right direction. (AP Photo/Ed Andrieski, File)
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