Daren Brown returns to manage Class AAA Tacoma, replacing Pat Listach, who was not retained for this season. Mitch Canham will move up to Class AA Arkansas.
With a focus on reinvigorating a farm system that had been short on talent and prospects in past seasons, but had also received an influx of talent thanks to the myriad of trades this offseason, the Mariners announced their player development staff and coaching staffs for the each minor league affiliate going into the 2019 season.
Mariners’ director of player development Andy McKay retained a large group of coaches and coordinators from last season, but several have changed positions within the organization.