The Minnesota Twins have traded pitcher Zach Duke to the Seattle Mariners in exchange for pitcher Chase De Jong and infielder Ryan Costello.
Duke will help strengthen the Mariners' bullpen by providing a left-handed arm to go along with James Pazos. Both De Jong and Costello are minor leaguers with De Jong in Double-A and Costello in Single-A.
Duke has posted a 3.62 ERA and 1.58 WHIP while striking out 39 in 37 /3 innings pitched this season.
Source: MLB Roster Moves