Saitama Seibu Lions · Pitcher (LHP starter)
A left-handed starter for the Saitama Seibu Lions. A command-and-secondaries pitcher, he threw 159⅔ innings with a 2.65 ERA in 2025. His changeup and splitter are rated abroad as “arguably double-plus” pitches.
Per FanGraphs, he posted a 2.59 ERA and 2.49 FIP in 2025, with a 17.8% K-BB rate that ranked fifth among qualifiers. Just Baseball grades his changeup and splitter as “arguably double-plus” (a 164 Stuff+), and ESPN says scouts liken him to lefty Danny Coulombe. A polish-over-power southpaw.
No posting or move has been announced; he remains a rotation anchor for Seibu.
A polished left-handed starter who wins with a changeup/splitter and command.
As of 2026-06-30 · Source: NPB official
NPB Prospects西武の左腕・隅田知一郎を、海外はどう見るか。ESPN・Just Baseball・FanGraphs の評価をまとめた。武器はチェンジアップとスプリットで、海外では「ダブルプラス級」と高評価。2025年は防御率2.59・FIP2.49とアナリティクスでも上位に並ぶ。剛速球ではなく完成度で勝負する、次のNPB左腕。原文・出典は発言者名のリンクから。
