Houston-based criminal defense lawyer Russell Hardin Jr. warned a federal judge in Washington in December that the congressional committee and law firm that investigated drug use in Major League Baseball were not likely to turn over documents to Roger Clemens without a fight.

He was right. Hardin’s now back in court, complaining that the House of Representatives oversight committee and DLA Piper are unfairly keeping documents secret that may prove helpful to Clemens in defending against charges of perjury and obstruction. Judge Reggie Walton of U.S. District Court for the District of Columbia will hear from the lawyers at a hearing April 21.