Mariners Select Darren McCaughan

The Mariners announced they’ve selected the contract of right-hander Darren McCaughan. Outfielder Dillon Thomas has been optioned to Triple-A Tacoma to create space on the active roster. Seattle had a vacancy on the 40-man roster after placing outfielder Jake Fraley on the COVID-19 injured list last weekend.

It’s the first big league call for McCaughan, whom Seattle originally selected in the 12th round out of Long Beach State in 2017. The 25-year-old has never appeared on an organizational prospect list at FanGraphs or Baseball America, but he’s pitched well throughout his minor league career. Over parts of four professional seasons, McCaughan has worked to a 3.75 ERA with a below-average 20.8% strikeout rate but a minuscule 4.7% walk percentage.

It has been more of the same for McCaughan this season with Triple-A Tacoma. Through ten starts, he’s worked to a 3.97 ERA. That’s the fourth-lowest mark among the thirty hurlers with 40+ innings in the hitter-friendly league. McCaughan still hasn’t missed many bats (18.5% strikeout percentage) but he’s continued to pound the strike zone (5.3% walk rate) and generally been quite effective at retiring high level hitters.

Ryan Divish of the Seattle Times reported McCaughan’s promotion shortly before the official announcement.