On the 16th, Rakuten Eagles announced that Ryosuke Tatsumi who had exercised his domestic free agent rights, would remain with the team.

Tatsumi commented through the team's official website, "After exercising my free agent rights, I once again felt how much I was nurtured by Rakuten Eagles over the past seven years, and I've been given a loving contract this time, so I want to make this a season where I can give good news to the team, everyone involved, and the fans who have high hopes for me. This season, I really want to win, both as a team and as an individual. I want to achieve results that allow me to take the lead, lead the team to victory, and bring smiles to Tohoku and see the joy of the Tohoku fans from the field."

Tatsumi joined Rakuten Eagles as the first pick in the 2018 draft and has played in over 100 games every year since his first year in 2019. In 2021, he reached the required number of at-bats for the first time, and in 2024, he played in all 143 games, hitting 158 hit and winning the most hit title. Last season, he played in 114 games, batting .240 Home Run and 32 RBI. On defense, he has won the Golden Glove Award in outfielder category for five consecutive years since 2021.