The Mariners announced a group of moves that will change up their bullpen mix. Righty Ryan Garton’s contract was selected; he’ll be joined by fellow righty Matt Festa, who was recalled.
To make 40-man space for Garton, the M’s have designated southpaw Zac Rosscup for assignment. Active roster space for Festa comes at the expense of Erik Swanson, who was optioned out.
The 29-year-old Garton earned his way back to the bigs for the first time since 2017 after showing well in a swingman capacity at Triple-A. In 26 innings over a dozen appearances, including one start (just the second of his professional career), Garton posted a 3.46 ERA with 9.7 K/9 and 3.1 BB/9.
Rosscup, 30, had an outwardly appealing 3.21 ERA but had allowed 14 walks to go with twenty strikeouts in 14 innings. He was posting yawning platoon splits, dominating those left-handed hitters he didn’t walk (.087/.323/.087) while being tuned up by righties (.344/.447/.500).