Roger Clemens' perjury trial begins (Reuters)



Former Major League Baseball pitcher Roger Clemens arrives for the first day of his perjury trial, at the federal courthouse in Washington, July 6, 2011. REUTERS/Jonathan ErnstReuters - Baseball pitching great Roger Clemens may call ex-teammates to testify in his defense at his perjury trial while a prosecutor said on Wednesday he may mention or call as witnesses star players implicated in the steroids scandal.