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Anti-Doping Chief: Armstrong Knows Truth, Sticking To 'Baseless Soundbites'

United States Anti-Doping Agency Chief Executive Officer Travis Tygart, right, during a subcommittee hearing on drug use in sports in 2008. (AP)
United States Anti-Doping Agency Chief Executive Officer Travis Tygart, right, during a subcommittee hearing on drug use in sports in 2008. (AP)

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