Grading the Mariners’ busy trade deadline

SEATTLE, WA - AUGUST 01: Cameron Maybin #10 of the Seattle Mariners is greeted in the dugout after scoring in the second inning against the Houston Astros at Safeco Field on August 1, 2018 in Seattle, Washington. (Photo by Lindsey Wasson/Getty Images)
SEATTLE, WA - AUGUST 01: Cameron Maybin #10 of the Seattle Mariners is greeted in the dugout after scoring in the second inning against the Houston Astros at Safeco Field on August 1, 2018 in Seattle, Washington. (Photo by Lindsey Wasson/Getty Images) /
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LHP ZACH DUKE

MINNEAPOLIS, MN – APRIL 10: Zach Duke #32 of the Minnesota Twins delivers a pitch against the Houston Astros during the eighth inning of the game on April 10, 2018 at Target Field in Minneapolis, Minnesota. The Twins defeated the Astros 4-1. (Photo by Hannah Foslien/Getty Images)
MINNEAPOLIS, MN – APRIL 10: Zach Duke #32 of the Minnesota Twins delivers a pitch against the Houston Astros during the eighth inning of the game on April 10, 2018 at Target Field in Minneapolis, Minnesota. The Twins defeated the Astros 4-1. (Photo by Hannah Foslien/Getty Images) /

While his Mariner debut went horribly wrong, Duke is still a nice addition to the bullpen.

After Marc Rzepczynski failed to fill his role as the Mariners’ lefty specialist, the M’s have struggled to find another southpaw to pair up with James Pazos. This has put a lot more work on Pazos, who seems to be wearing down a bit as we head later into the season.

Duke and his multiple arm angles add another dimension to the Mariners’ bullpen, where he’ll be relied upon to face the likes of Didi Gregorius and Matt Olson in key moments.

De Jong has some potential as a starter but didn’t have a clear future with the Mariners after squandering his opportunities in 2017. At best, he’ll be a decent fourth or fifth starter for the Twins.

Dipoto and co. won’t be losing sleep over De Jong. Same goes for Costello.

Grade: B