The Tigers designated righty Casey Fien for assignment to make room for Johnny Damon, according to the team's Twitter page. Fien, 26, posted a 3.41 ERA, 10.2 K/9, and 2.3 BB/9 in 58 Triple A relief innings this year. He struggled in 11.3 big league frames, which marked his Major League debut. Baseball America ranked Fien 27th among Tigers prospects, writing that he "profiles as a middle reliever." Still, his minor league command is intriguing.