Roger Clemens is taking to Twitter to defend himself against federal perjury charges. In a tweet sent out late Thursday, the seven-time Cy Young Award winner insisted he never lied to Congress, nor took human growth hormone or steroids. Clemens also asked the public to keep an open mind until the trial. Earlier in the day, a federal grand jury handed down an indictment against Clemens on charges of perjury, making false statements, and lying to Congress. The charges stem from the pitcher’s 2008 testimony before the House Committee on Oversight and Government Reform, in which he denied taking performance-enhancing substances. However, Clemens’ former trainer Brian McNamee testified that he personally injected Clemens with steroids and HGH on multiple occasions over a four-year period. The 48-year-old Clemens has been out of baseball since 2007. Allegations of steroid use against him originally surfaced in the 2007 report by George Mitchell on performance-enhancing substances in baseball.