Aaron Gershenfeld has been promoted from the minors to replace director of catching/field coordinator Tanner Swanson, who left the Yankees to become the Seattle Mariners bench coach. Also, the Yankees haven’t decided if they’ll keep assistant hitting coaches Casey Dykes and Jake Hirst.

The Yankees continue to lose key coaches as the offseason gets underway.

Yanks Go Yard hosts Adam Weinrib and Thomas Carannante react to the Yankees losing Tanner Swanson to the Mariners and Shelley Duncan to the Red Sox as the 2026 GM Meetings begin, and lay out what Brian Cashman needs to get done before the lockout.

The Mariners need offense to boost their run production. Perhaps targeting a two-time All-Star from the Yankees would make sense.

Swanson’s Washington ties run deep. He grew up in Roslyn, makes his offseason home in Seattle, and played college baseball at Central Washington University. According to the Yankees, Swanson was in the process of obtaining a master’s in sports administration and leadership from Seattle University prior to this season.

Tanner Swanson, who has been the Yankees’ catching coordinator since November 2019, is leaving to become the bench coach of the Mariners, The Post has learned. STAY UP TO DATE WITH THE LATEST NEWS BY SUBSCRIBING TO MORNING REPORT NEWSLETTER Swanson will serve under Jason Kanzler,

SEATTLE – Seattle Mariners President of Baseball Operations Jerry Dipoto announced today that the Mariners have hired Tanner Swanson as Bench Coach and CJ Gillman as Hitting Coach. “I am excited to have Tanner and CJ join our coaching staff,

The Seattle native is joining the Mariners as their new bench coach, a source confirmed to the Daily News on Friday. Swanson, who was on an expiring contract with the Yankees, will serve under new Mariners manager Jason Kanzler, who was hired earlier this week.

Yankees catching coach and field coordinator Tanner Swanson is joining the Mariners' staff bench coach, a source confirmed to ESPN on Friday.

The Mariners need a third baseman and a middle-of-the-order threat. Teruaki Sato could claim both roles immediately in Seattle.