Mariners swipe longtime Yankees coordinator Tanner Swanson as bench coach Nov 6, 2026 @ 4:00pmBaseball > MLB > New York Yankees > Seattle MarinersNY Post SportsTanner Swanson, who has been the Yankees’ catching coordinator since November 2019, leaving to become the bench coach of the Mariners, The Post has learned. Read moreMariners swipe longtime Yankees coordinator Tanner Swanson as bench coach