Brian McNamee, the former trainer of Roger Clemens, may have proved to be the star witness in the perjury case but Andy Pettitte, the Yankees hero, is all set to lead the supporting cast.

Pettitte is expected to step off the mound and onto the witness stand for testifying against his pitching mentor.

From NYdailynews.com:

Pettitte has already both bolstered McNamee’s credibility and directly contradicted some of the allegedly misleading statements by Clemens that are listed in the six-count indictment issued Thursday against the Rocket. In 2008, Pettitte testified that he used human growth hormone provided by McNamee to expedite his recovery from a 2004 elbow injury, and that he discussed HGH with Clemens in 1999 and 2005.

“Mac told the truth about me,” Pettitte said upon arriving at spring training in 2008, having seemingly survived the congressional probe into baseball’s doping subculture.

Clemens is expected to plead not guilty and this will mean that Pettitte will be all set again to become a key witness in the perjury case against Clemens.

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