With the Mariners attempting to shore up one of the league’s worst bullpens, they’ve added yet another arm that they’ve been facing, this time in the form of Keynan Middleton. Middleton was nontendered by the Angels on December 2nd, but has now found a new home within the AL West.
He has a lot of potential, include one of the league’s best fastball spinrates, but he posted a 5.25 ERA in 2020. His peripherals point out that he was unlucky, with an ERA higher than his FIP. Over his career, he’s been a consistently reliable relief arm. He has a 3.48 lifetime ERA, but is only one shortened season removed from posted a 1.17 ERA. The 3.48 ERA comes across 95.2 innings of work. Current Seattle General Manager Jerry DiPoto is the GM who drafted Middleton during his tenure with the Angels.
The Mariners will pay Middleton $800K and have designated Phillip Ervin for assignment to make roster space.