Duensing is joining the Royals after seven seasons with the Twins, mostly spent as a middle reliever. He lacks the type of raw stuff teams generally want in a late-inning reliever, but is effective enough versus left-handed hitters to perhaps snag a low-leverage role at age 32.
Ohlendorf is a 33-year-old journeyman who had a nice 19-inning stint with the Rangers last season after shifting to the bullpen full time. Much like Duensing he’ll be competing for a middle relief gig, although Ohlendorf also has recent starting experience.
Barmes was long one of the best defensive shortstops in baseball, but at age 37 his range has slipped and his bat remains poor. Last season he hit just .232 with a .633 OPS in 98 games for the Padres and Barmes hasn’t topped a .700 OPS since 2009. He’ll compete for a utility infielder role.