Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Urawa Reds | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tokyo Verdy | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Yokohama F. Marinos | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Albirex Niigata | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Cerezo Osaka | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Kawasaki Frontale | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Machida Zelvia | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Shonan Bellmare | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Yokohama | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Consadole Sapporo | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Avispa Fukuoka | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 FC Tokyo | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Kyoto Sanga | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Shimizu S-Pulse | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Kashima Antlers | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Vissel Kobe | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Fagiano Okayama | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Nagoya Grampus | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Sanfrecce Hiroshima | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Gamba Osaka | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Australia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Koki Kumasaka plays as a midfielder for Kashiwa Reysol. Koki Kumasaka has made 29 professional appearances. Koki Kumasaka has made 18 appearances in the J-League 2025, earning an average rating of 7.1. Koki Kumasaka stands 185 cm tall, weighs 75 kg.
