Detwiler was placed on the 15-day disabled list Sunday with left shoulder inflammation, Evan Grant of the Dallas Morning News reports. Detwiler said he first felt soreness in his pitching arm during his most recent start Thursday, and after having team doctors take a look at him, the Rangers decided a DL move was the best course of action. Tanner Scheppers was recalled from Triple-A Round Rock to fill out their 25-man roster, but the Rangers still need to identify a starter to assume Detwiler's rotation spot Wednesday in Boston. The top options would likely be Anthony Ranaudo or top prospect Alex Gonzalez.