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The Texas Rangers are moving on from a member of their starting rotation. Texas is trading right-hander Michael Lorenzen to the Kansas City Royals in exchange for southpaw Walter Pennington. Lorenzen is set to be an unrestricted free agent following the season. He is 5-and-6 with a 3.81 ERA through 18 starts and 19 appearances this season. Pennington will be assigned to Triple-A Round Rock. In other news, the team placed John Schreiber on the 15-day injured list with a patella tendon injury in his right knee and recalled right-handed reliever Will Klein from Triple-A Omaha.