| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2025 | J2-League | 36 | 1382 | 4 | 2 | 0.39 | 6.68 |
| 2024 | J-League | 1 | 28 | 0 | 0 | — | 6.22 |
Domestic league competitions only; G+A/90 computed from minutes actually played.
Cohort: 71 J2-League forwards, 2025, min. 450 minutes. Computed by ranking the full league corpus, not taken from any feed.
Figures computed from the GioScore season-stats database · as of 2026-07-06
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Consadole Sapporo | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Kataller Toyama | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Fujieda MYFC | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Kashiwa Reysol | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Omiya Ardija | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Sagan Tosu | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Ventforet Kofu | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Shonan Bellmare | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 JEF United | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 |
 Tokushima Vortis | 2 | 0 | 2 | 0 | 1 | 0 | 0 | 0 |
 V-Varen Nagasaki | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Vegalta Sendai | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Renofa Yamaguchi | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Oita Trinita | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Montedio Yamagata | 2 | 0 | 2 | 0 | 0 | 1 | 0 | 0 |
 Imabari | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 0 |
 Ehime | 2 | 2 | 0 | 0 | 0 | 1 | 0 | 0 |
 Mito Hollyhock | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Blaublitz Akita | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Iwaki | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Netherlands U17 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 USA U17 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Mexico U17 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Hong Kong U23 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Myanmar U23 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Palestine U23 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
The 2025 J2-League line for Koshiro Sumi: 36 appearances (1,382 minutes), 4 goals, 2 assists — 0.39 goal involvements per 90. That season graded out at an average match rating of 6.68. Measured against 71 J2-League forwards with at least 450 minutes in 2025, he sits in the 44th percentile by match rating, and 24th of 71 for goals scored.
Since 2024 he has accumulated 2 league seasons across 2 clubs, with 4 goals and 2 assists over 1,410 minutes — 0.38 G+A per 90 career-wide.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| Júbilo Iwata | 2024/2025 - now | 43 | 4 | 2 | 1568 | — | — | 6.63 |
| Tsukuba University | 2019/2020 - 2024/2025 | 4 | 1 | 0 | 210 | — | — | — |
| Total | 47 | 5 | 2 | 1778 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 24/25 | Júbilo Iwata | 41 | 4 | — | 1517 | 0 | 0 | 6.84 |
