Koshiro Sakamoto (坂本 光士郎, Sakamoto Koshiro; born September 9, 1994) is a professional Japanese baseball pitcher for the Chiba Lotte Marines of Nippon Professional Baseball (NPB). He previously played in NPB for the Tokyo Yakult Swallows.
Source: “Koshiro Sakamoto”, English Wikipedia (CC BY-SA 4.0), excerpt