KANSAS CITY ROYALS — Granted INF Ryan Roberts his unconditional release. TEXAS RANGERS — Acquired LHP Sam Freeman from St. Louis Cardinals for a player to be named or cash considerations. Released RHP Juan Carlos Oviedo and OF Nate Schierholtz from their minor league contracts. MIAMI MARLINS — Reassigned INF Scott Sizemore to their minor league camp. American Hockey LeagueSPRINGFIELD FALCONS — Signed F Seth Ambroz to an amateur tryout contract.