The Twins selected Go's contract from Triple-A St. Paul on Tuesday.
Go was acquired via trade from the Tigers on Sunday and is reporting directly to the major-league roster. The Korean reliever holds a 1.96 ERA and 54:13 K:BB over 41.1 innings between the Double- and Triple-A levels this season. Go -- who turns 28 in August -- will be making his major-league debut when/if he gets into a game.