Koki Yonekura is a seasoned Japanese defender, currently plying his trade for JEF United Ichihara Chiba in the J2 League. Operating primarily as a right-back, Yonekura has built a reputation as a reliable and consistent performer over a lengthy career in Japanese football. His journey began at his hometown club, JEF United, where he progressed through the youth ranks before making his professional debut. He has remained a loyal servant to the club for the majority of his career, with his versatility allowing him to feature across the defensive line when called upon. While his trophy cabinet may not be overflowing, his value lies in his experience and steady presence, having made hundreds of appearances for JEF United. Now 37, Yonekura provides crucial veteran leadership and defensive know-how, helping to guide younger teammates while still contributing effectively on the pitch with his tactical understanding and committed performances.