The 2026 Nippon Life Interleague Series has concluded, with the Saitama Seibu Lions winning their first-ever championship. The Most Valuable Player and Outstanding Player awards were also announced on the 18th.

Saitama Seibu Lions 's Shinya Hasegawa, who won the team's first-ever Most Valuable Player award, was the league's leading hitter in interleague play with a .367 batting average. On the 7th, he hit his 8th home run of the season, which was the game-winning hit, and on the 9th and 10th, he recorded walk-off hits in two consecutive games, showcasing his clutch hitting and making a significant contribution to the team's victory. He is the first player from the development league to win the interleague MVP award among the 12 teams.

Pacific League 's Outstanding Player Award went to Ryoya Kurihara. He played in 18 interleague games, leading the league with 7 Home Run and 19 RBI. In the game against Hanshin Tigers on the 9th, he hit two Home Run, including his 100th career home run, and led the offense. The team finished with a 14-4 record, narrowly missing out on the championship, but still managed to build a lead of 10 games.

In addition, Central League Outstanding Player Award went to Hanshin Tigers Tigers pitcher Haruto Takahashi.