AUSTIN, Texas (AP) -- A federal judge had tough questions for U.S. anti-doping officials in their pursuit of Lance Armstrong, grilling them at length in a hearing Friday.

U.S. District Judge Sam Sparks wondered whether USADA has given the seven-time Tour de France winner a legitimate chance to defend himself against charges that he used performance-enhancing drugs throughout his career.

But Sparks also asked Armstrong's attorneys to show why USADA should not have jurisdiction in the case, as they have argued.

Armstrong has sued USADA to block its attempt to prove he cheated. Sparks made no ruling and gave lawyers another week to file more legal briefs.

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