MLBSuspended Tampa Bay Rays minor league RHP Matthew Walker (FSL) for 50 games for testing positive for a performance-enhancing substance in violation of the minor league drug prevention and treatment program.
CHICAGO WHITE SOXPurchased the contract of LHP Clayton Richard from Charlotte (IL). Transferred LHP Andrew Sisco from the 15- to 60-day DL.
NEW YORK YANKEESPlaced C Jorge Posada on the 15-day DL. Activated OF Johnny Damon from the 15-day DL.
TEXAS RANGERSRecalled pitcher Scott Feldman from Frisco (Texas). Optioned C Taylor Teagarden to Oklahoma (PCL).
PITTSBURGH PIRATESRecalled RHP John Van Benschoten from Indianapolis (IL). Optioned RHP Marino Salas to Indianapolis.
National Basketball Association
NBANamed Bernie Fryer vice president and director of officials; Joe Borgia vice president, referee operations, and Ronnie Nunn director of development.
BOSTON CELTICSRe-signed G Eddie House and G Tony Allen.
Women's National Basketball Association
SACRAMENTO MONARCHSRe-signed F DeMya Walker.
National Football League
CLEVELAND BROWNSSigned DE Christian Mohr as an international practice squad player. Waived DB Justin Sandy and DE Zach West.
DENVER BRONCOSSigned C Kory Lichtensteiger. Waived RB Mike Bell and K Garrett Hartley.
KANSAS CITY CHIEFSSigned RB Jamaal Charles and TE Brad Cottam to three-year contracts.
NEW ENGLAND PATRIOTSSigned LB Shawn Crable and QB Kevin O'Connell.
NEW ORLEANS SAINTSAcquired TE Jeremy Shockey from the New York Giants for second- and fifth-round 2009 draft picks.
OAKLAND RAIDERSReleased OT Jonathan Palmer.
TENNESSEE TITANSAgreed to terms with DE William Hayes on a multiyear contract. Waived S Rocky Schwartz.