(Seattle, WA)  --  The Mariners look to strengthen their bullpen by adding a pair of relievers.  Seattle shipped Chase De Jong and Ryan Costello to the Twins for left-handed pitcher Zach Duke.  The M's also acquired right-hander Adam Warren from the Yankees.  Duke has gone 3-and-4 with a 3.62 ERA this season, while Warren has gone 0-and-1 with a 2.70 ERA.