Mistrial ruled in Roger Clemens case

WASHINGTON (ESPN) - The judge presiding over Roger Clemens' perjury trial declared a mistrial over evidence revealed to the jury that he believed would prejudice the jury against the former baseball star.

U.S. District Judge Reggie Walton ruled that prosecutors violated his orders not to reveal certain evidence to the jury. He will hear a motion on whether a new trial would be considered double jeopardy.

Rusty Hardin, Clemens' attorney, said he needs until July 29 to file the motion for the double-jeopardy hearing. The prosecution has until Aug. 2 to respond and the hearing would take place Sept. 2.