Kazunari Ishii (石井 一成, Ishii Kazunari; born May 6, 1994) is a Japanese professional baseball infielder for the Saitama Seibu Lions of Nippon Professional Baseball (NPB). He has previously played in NPB for the Hokkaido Nippon-Ham Fighters. His younger brother Takumi is also a professional baseball player who plays for Tokyo Yakult Swallows.
Source: “Kazunari Ishii”, English Wikipedia (CC BY-SA 4.0), excerpt