The Seibu Lions announced their coaching staff for the 2027 season on the 30th.

Next season will be the third year in office for Manager Fumiya Nishiguchi (54). While the team sank to 5th place in his first year in 2025, they made a great leap to 2nd place this season. There are no major changes to the coaching staff, but Hiroyuki Shirasaki (36), who served as a team staff member this season, has newly joined the cabinet as the first-team batting coach. During his active career playing for DeNA and the Orix Buffaloes, he appeared in a total of 413 games.

New coach Arata Shirasaki commented through the team: "Having worked as a performance analyst over the past year, I want to utilize the knowledge and insights I have gained to address each player's unique characteristics and challenges, supporting them to bring out their individual strengths to the fullest. I will prioritize communication with the players and strive to convey information obtained from analysis in an easy-to-understand manner so that it can be applied to daily practice and games. I will continue to learn and devote myself to contributing to the improvement of player performance and the team's scoring ability."

Coach Masatoshi Okada (37) has been reassigned from the third team to the first-team battery coach. Coach Shota Nakata has been reassigned from the first-team battery coach to the third-team fielder coach as part of the reshuffle. The coaching staff for next season is as follows.

[First team]

Director Fumiya Nishiguchi

Head: Yusuke Torigoe

Chief pitcher Coach Kiyoshi Toyoda

pitcher Tatsuya Oishi

Battery: Masatoshi Okada (Position Change)

Chief fielder and Batting Coach Toshihisa Nishi

Batting: Yoshiie Tachibana, Hiroyuki Shirasaki (Newly Appointed)

infield defense base running Satoshi Kuroda

outfield defense base running Masato Kumashiro

[Farm]

Director Tatsuya Ozeki

pitcher Chief Yoshihiro Doi

pitcher: Tomoo Watanabe, Hayato Aoki, Daiki Enokida

Second Team Battery Coach Kosuke Noda

Ryutaro Tsuji, Second Team fielder Chief and Batting Coach

Minor League Hitting Coach: Hiroyuki Oshima

Minor League infield defense base running Keiji Obiki

Minor League outfield defense base running Shogo Akada

Third Team Chief: Satoshi Aoki

Third-team fielders: Norio Tanabe, Yuji Onizaki, Fumikazu Kimura, Shota Nakata (reassignment)