| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2021 | J2-League | 29 | 2319 | 3 | 0 | 0.12 | — |
| 2022 | J2-League | 31 | 2302 | 0 | 3 | 0.12 | — |
| 2023 | J2-League | 18 | 1464 | 1 | 1 | 0.12 | — |
| 2024 | J2-League | 23 | 1800 | 2 | 2 | 0.2 | — |
| 2025 | J2-League | 26 | 2000 | 2 | 2 | 0.18 | 6.46 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Cohort: 128 J2-League defenders, 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 2026-09-02
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Montedio Yamagata | 4 | 2 | 1 | 1 | 1 | 0 | 0 | 2 |
 V-Varen Nagasaki | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Renofa Yamaguchi | 3 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
 Tochigi | 3 | 0 | 2 | 1 | 0 | 0 | 0 | 0 |
 Blaublitz Akita | 3 | 0 | 2 | 1 | 0 | 0 | 1 | 0 |
 Iwaki | 3 | 2 | 1 | 0 | 0 | 1 | 0 | 0 |
 Sagan Tosu | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Consadole Sapporo | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Oita Trinita | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Roasso Kumamoto | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Zweigen Kanazawa | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Kashiwa Reysol | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Omiya Ardija | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Ventforet Kofu | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Yokohama | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Yokohama F. Marinos | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Kyoto Sanga | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Albirex Niigata | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Shimizu S-Pulse | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 JEF United | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Koshi Osaki's 2025 J2-League season produced 2 goals and 2 assists across 26 appearances (2,000 minutes) — 0.18 goal involvements per 90. That season graded out at an average match rating of 6.46. Ranked across 128 J2-League defenders (2025, at least 450 minutes), he comes out in the 60th percentile by match rating, with a goals rank of 17th of 128.
The record shows 5 league seasons for him (2021–2025), all with a single club.
