Yuki Matsui is a Japanese professional baseball pitcher currently playing for the San Diego Padres of Major League Baseball (MLB). He previously played for the Tohoku Rakuten Golden Eagles of Nippon Professional Baseball (NPB) for nine seasons, where he established himself as one of the league's premier closers. Known for his fiery demeanor on the mound and his devastating splitter, Matsui consistently racked up saves and strikeouts in NPB, earning multiple All-Star selections and Pacific League Saves Leader awards. He signed with the Padres in 2024, bringing his talent and experience to the MLB.