The Diamondbacks have acquired right-handed starter Armando Galarraga from the Tigers for pitching prospects Kevin Eichhorn and Ryan Robowski. Galarraga, who came within one out of a perfect game last season, was 4-9 with a 4.49 ERA in 25 appearances in 2010. Last week, Detroit designated Galarraga for assignment shortly after agreeing with him on a $2.3 million, one-year contract that avoided salary arbitration.