Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Giravanz Kitakyushu | 3 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
 Yokohama | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Kataller Toyama | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Mito Hollyhock | 2 | 0 | 2 | 0 | 0 | 0 | 1 | 0 |
 YSCC | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 0 |
 Urawa Reds | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Yokohama F. Marinos | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 FC Tokyo | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Cerezo Osaka | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Gifu | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Vissel Kobe | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 JEF United | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Tokushima Vortis | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Fagiano Okayama | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Kamatamare Sanuki | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 |
 Matsumoto Yamaga | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Oita Trinita | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Gamba Osaka | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Montedio Yamagata | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Imabari | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Riku Saga plays as a defender for Kagoshima United. Throughout his career, Riku Saga has scored 5 goals and provided 9 assists in 61 appearances across 2 clubs. A commanding presence at the back, Riku Saga has made 61 career appearances, contributing 5 goals from defensive positions. Among the clubs he has represented — Fagiano Okayama, Iwaki — Riku Saga was most prolific at Iwaki, where he scored 5 goals in 42 appearances.
