Seibu Lions infielder Taiyo Sato (22) attended contract negotiations at the team's office in Tokorozawa, Saitama Prefecture on the 10th and signed a contract worth 6 million yen, a 2 million yen increase (estimated amount).

He joined Seibu Lions last fall as the second pick in the developmental draft and was promoted to the main roster in July. In his rookie year, he played in 13 games, recording 5 hit, 3 RBI, and a batting average of .167, and reflected, "It was a year in which I had truly amazing experiences, and it was also a year in which I keenly felt the areas where I still lacked strength."

He participated in the "2025 Asia Winter Baseball League" held in Taiwan from November 15th to December 7th, where he reunited with Softbank Hawks 's Shoji, with whom he played second base and shortstop at Kanagawa University. He vowed to "play in more games and perform better than Shoji" next season.