Detwiler was acquired from the Nationals to be in the Rangers' rotation, but he went 0-5 with a 6.95 ERA in seven starts. The 29-year-old went on the disabled list from May 15 to June 4 with left shoulder inflammation and then returned to the bullpen. He had a 7.71 ERA as a reliever.
T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields, follow him on Twitter @Sullivan_Ranger and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.