The Guardians selected Young's contract from Triple-A Columbus on Sunday.
Cleveland made a series of roster moves Sunday morning, adding a couple fresh arms in Young and James Karinchak following Saturday's doubleheader. Young, a 28-year-old lefty, owns a 4.90 career ERA in the big leagues, but he has pitched well out of the bullpen for Columbus this season (3.14 ERA in 27 appearances).