Blair's testimony pushed to Aug. 11

A former Houston gym owner learned Tuesday that his appearance before the Washington, D.C., grand jury investigating whether Roger Clemens lied to Congress about using performance-enhancing drugs has been re-scheduled for Aug. 11.

This is the second time that an appearance by Kelly Blair has been pushed back.

Blair was a partner in 1-on-1 Elite Personal Fitness, a gym in Pasadena, Texas, that closed last year. He is a cousin by marriage to New York Yankees pitcher Andy Pettitte, a friend and former teammate of Clemens. Pettitte's father worked out at the gym, where he reportedly obtained human growth hormone for his personal use.

According to Blair, he previously told FBI agents that he never supplied either Clemens or Pettitte with drugs. Blair claims to have never met Clemens, in fact. He doesn't deny having used steroids himself in the past. He also acknowledges a decade ago having recommended to athletes a Houston doctor who would prescribe HGH, though he claims neither Pettitte or Clemens were involved.