The Seattle Mariners have added Tanner Swanson to their coaching staff, bringing the former New York Yankees major league field coordinator and director of catching to the organization.
Swanson, who spent time with the Yankees overseeing catching development and field coordination, joins the Mariners' staff in a role that has not been officially specified by the club.
The move was reported on November 6, 2026, marking a homecoming for Swanson, who has ties to the Pacific Northwest.
