MLB -- Suspended free-agent P Luther Hackman 50 games for violating baseball's minor league drug program after testing positive for a performance-enhancing substance.
ASTROS -- Agreed to terms with C Brad Ausmus on one-year contract.
BREWERS -- Named Ted Simmons bench coach. Switched bench coach Dale Sveum to third base coach. Declined 2008 contract option on OF Geoff Jenkins.
DODGERS -- Announced resignation of manager Grady Little.
ORIOLES -- Named John Shelby first base coach, Lee MacPhail IV special assistant to the president of baseball operations, and Brian Graham special assignment coach for the minor leagues.
PIRATES -- Purchased contract of P Luis Munoz from Double-A Altoona. Designated P Josh Shortslef for assignment.
REDS -- Named Chris Speier bench coach and Juan Lopez bullpen coach.
YANKEES -- Signed Joe Girardi to three-year contract as manager.
CELTICS -- Exercised third-year contract option on G Rajon Rondo.
MAVERICKS -- Waived C D.J. Mbenga. Exercised third-year contract option on G Maurice Ager.
76ERS -- Exercised third-year contract option on F Rodney Carney.
INDIANA -- Announced resignation of Rob Senderoff, men's assistant basketball coach.
COWBOYS -- Signed QB Tony Romo to six-year contract.
EAGLES -- Signed LB William Kershaw (Maryland) to practice squad.
49ERS -- Signed LB Hannibal Navies. Waived FB Zak Keasey and signed him to practice squad.
REDSKINS -- Signed CB John Eubanks from practice squad. Placed CB Carlos Rogers on IR.
STEELERS -- Signed CB Anthony Madison. Released CB Ricardo Colclough.
TEXANS -- Signed QB Craig Nall. Released WR Harry Williams.
TITANS -- Placed LS Ken Amato on IR. Signed LS Jeremy Cain from practice squad.