| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2014 | J2-League | 15 | 360 | 0 | 0 | 0 | — |
| 2017 | J2-League | 39 | 951 | 9 | 0 | 0.85 | — |
| 2018 | J2-League | 34 | 1745 | 4 | 1 | 0.26 | — |
| 2019 | J1 League | 5 | 91 | 1 | 1 | 1.98 | 6.92 |
| 2020 | J1 League | 22 | 1046 | 3 | 1 | 0.34 | 6.88 |
| 2021 | J1 League | 26 | 1047 | 2 | 0 | 0.17 | 6.81 |
| 2022 | J2-League | 16 | 611 | 2 | 1 | 0.44 | — |
| 2023 | J2-League | 37 | 2096 | 4 | 3 | 0.3 | — |
| 2024 | J2-League | 26 | 1034 | 0 | 1 | 0.09 | — |
| 2025 | J2-League | 33 | 1731 | 1 | 2 | 0.16 | 6.57 |
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.
Figures computed from the GioScore season-stats database · as of 2026-08-14
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Ventforet Kofu | 4 | 1 | 1 | 2 | 1 | 0 | 1 | 0 |
 JEF United | 4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 |
 V-Varen Nagasaki | 4 | 0 | 2 | 2 | 0 | 0 | 1 | 0 |
 Ehime | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 0 |
 Sagan Tosu | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Shimizu S-Pulse | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Tokushima Vortis | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Júbilo Iwata | 3 | 1 | 2 | 0 | 0 | 0 | 1 | 0 |
 Montedio Yamagata | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Roasso Kumamoto | 3 | 3 | 0 | 0 | 0 | 1 | 1 | 0 |
 Blaublitz Akita | 3 | 0 | 1 | 2 | 1 | 0 | 0 | 0 |
 Fujieda MYFC | 3 | 1 | 2 | 0 | 0 | 0 | 0 | 0 |
 Kashiwa Reysol | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Omiya Ardija | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Yokohama | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Consadole Sapporo | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
 Kyoto Sanga | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Kawasaki Frontale | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Fagiano Okayama | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Renofa Yamaguchi | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
Kohei Isa closed the 2025 J2-League campaign on 1 goal and 2 assists from 33 outings (1,731 minutes) — 0.16 goal involvements per 90. His average match rating for that season computes to 6.57.
His recorded league career runs from 2014 to 2025: 10 seasons across 2 clubs. His best-rated season remains 2019 (6.92, J1 League); his lowest was 2025 (6.57). His two latest rated seasons run 0.21 lower than the rest of his career.
