There is probably no doubt anywhere that Roger Clemens used steroids. As he continues his legal wrangling with his former trainer, Brian McNamee, the Yankees want none of it. However, McNamee has plans to include the Yankees.

According to a story by Nathaniel Vinton in the Daily News, in a brief filed on Friday, McNamee has named a handful of current Yankees as potential witnesses in Clemens’ defamation suit against McNamee.

The Yankees have never relished the destructive defamation suit former pinstripe hero Roger Clemens brought two years ago against his accuser, former Yankee trainer Brian McNamee, but bigger headaches for the club may yet lie ahead according to a new appeals-court brief issued by McNamee’s defense attorneys.

A footnote deep in the 60-page brief lists current Yankee stars Andy Pettitte,Mariano Rivera, and Derek Jeter as witnesses McNamee might call to the stand for sworn testimony about Clemens’ purported use of steroids and human growth hormone. Also listed among potential witnesses for McNamee is Angela Moyer, an alleged mistress of Clemens who tended bar near the Upper East Side apartment where McNamee said he visited Clemens after Yankee games to inject the pitcher with steroids and human growth hormone (Clemens has testified he thought the syringes contained vitamin B12).

The brief, which McNamee’s attorneys sent Friday to the Fifth Circuit Court of Appeals, portrays Clemens’ defamation suit as nearly dead in the water. It comes in response to Clemens’ appeal of a lower court’s ruling last year that eviscerated the suit, which Clemens first brought against McNamee on Jan. 6, 2008, three weeks after a report by former Senator George Mitchell first publicized McNamee’s accusations. Mitchell was also listed as a potential witness. He and the others could also be summoned to testify as part of a defamation countersuit that McNamee himself brought against Clemens last year in a federal court in Brooklyn — and will likely pursue, at least in order to recover his monumental legal fees.

Right now only the legal system could prevent from having the Yankee players testify. If the courts are convinced with the brief, then this won’t happen.