After signing autographs, former Major League Baseball pitcher Roger Clemens leaves federal court, Thursday, May 17, 2012, in Washington. (AP Photo/Haraz N. Ghanbari)
Brian McNamee, former strength coach of retired baseball great Roger Clemens, leaves federal court in Washington on May 15, 2012, after testifying at Clemens' perjury trial. (Associated Press)
Former Major League Baseball pitcher Roger Clemens, who is on trial for perjury, arrives May 14, 2012, at federal court in Washington. (Associated Press)
Former Major League Baseball pitcher Roger Clemens (center) leaves federal court in Washington on May 1, 2012, as his perjury retrial continues. Clemens faces charges of lying to Congress in 2008 when he said he had never used steroids of human growth hormone. (Associated Press
** FILE ** Former Major League Baseball pitcher Roger Clemens leaves federal court in Washington on Tuesday, April 24, 2012. (AP Photo/Manuel Balce Ceneta)
Retired Major League baseball pitcher Roger Clemens, and his wife Debra Lynn Godfrey, arrive at federal court in Washington, Monday, April 23, 2012. The Clemens perjury trial moves into the next phase with the planned seating of a jury and opening arguments on Monday. (AP Photo/Susan Walsh)
Former Major League Baseball pitcher Roger Clemens (right) and his lawyer Rusty Hardin leave a federal courthouse in Washington on April 17, 2012, as the second day of jury selection in his perjury trial wraps up. (Associated Press)
This artist rendering shows former Major League Baseball pitcher Roger Clemens (standing) and his attorney, Rusty Hardin (front left), facing prospective jurors inside federal court in Washington during jury selection in the perjury trial. (Associated Press)
Former Major League Baseball pitcher Roger Clemens (left) and his attorney Rusty Hardin arrive at federal court in Washington on Monday, April 16, 2012, for jury selection in Clemens' perjury trial. (AP Photo/Manuel Balce Ceneta)
** FILE ** In this July 13, 2011, file photo, former Major League Baseball pitcher Roger Clemens, right, and his attorney Rusty Hardin outside federal court in Washington. (AP Photo/Alex Brandon, File)
** FILE ** Former Major League Baseball pitcher Roger Clemens leaves federal court in Washington on Thursday, July 14, 2011, after a federal judge declared a mistrial in his perjury trial after prosecutors showed jurors evidence that the judge had ruled out of bounds. (AP Photo/Manuel Balce Ceneta)
Former Major League Baseball pitcher Roger Clemens gestures on July 14, 2011, as he leaves federal court in Washington after the judge declared a mistrial in his perjury case. (Associated Press)