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Mariners closing in on new bench coach (source)

The Mariners are filling out new manager Jason Kanzler’s coaching staff. The team is in the process of hiring Tanner Swanson to be its next bench coach, a source tells MLB.com’s Daniel Kramer. Swanson, a Washington state native who graduated…

By Daniel Kramer · MLB Official

Published: Friday, 6 November 2026 at 11:01 PM

Key Things to Know

The Mariners are reportedly hiring Tanner Swanson as their new bench coach under manager Jason Kanzler.
Swanson served on the New York Yankees' Major League coaching staff from 2020 through 2026.
Swanson is set to replace Manny Acta, who was dismissed alongside three other coaches.

The Story in 60 Seconds

The Seattle Mariners are in the process of hiring Tanner Swanson as their new bench coach under manager Jason Kanzler, according to a source. Swanson, a Washington state native, spent 2020 to 2026 on the New York Yankees' coaching staff. The Mariners have not yet officially confirmed the hire.

Swanson will replace Manny Acta, who was among four coaches let go from former manager Dan Wilson's staff following the regular season. Additionally, former Seattle Minor League hitting coordinator CJ Gillman will reportedly take over as the team's lead hitting coach.

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Mariners closing in on new bench coach (source)

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