ABC News: Just days after the trial began, the federal judge overseeing the Roger Clemens trial ended the proceedings and declared a mistrial. A new jury will now be called.

The judge halted proceedings this morning over complaints from the defense about the prosecutors use of information the judge had banned – and then the judge quickly accepted their concerns and declared a mistrial.

The defense had complained that prosecutors had not followed a pretrial ruling to limit information about conversations fellow ballplayer  Andy Pettitte had with his wife about the use of human growth hormone.
Clemens defense team has raised objections to prosecutors showing jurors extended parts of Roger Clemens testimony on February 13, 2008 which referenced conversations between Andy Pettitte and his wife about use of HGH.

Before  a brief recess Walton admonished prosecutors for not editing down portions of the testimony, “I made a ruling that  statements that Mr. Pettitte made to his wife could not be admitted.”

“This clearly runs afoul of my pre-trial rulings.”  Walton told the prosecutors. “That testimony is not going to be relevant.”