K. Oiwa · career
Kazuki Oiwa
Center Back · Renofa Yamaguchi · season-by-season, by competition, and every match.
Career report
Past his 2021/22 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
Peak: 2021/22Trending downRemarkably consistent
The record covers 6 seasons (2020/21–2025/26) across 1 club — 123 appearances with 9 goal contributions from defence.
His best campaign on record is 2021/22 at Shonan Bellmare — Season rating 23, 1 goal and 0 assists in 25 games. Form has slipped 14 Season points across his last 3 full seasons. The gap to his peak is 20 Season points.
Season-to-season output barely moves — his form has stayed within a tight band (±7 points) across 6 campaigns.
By season
| Season | Club | Apps | G | A | Rating | Season |
|---|---|---|---|---|---|---|
| 2025/26 | Shonan Bellmare | 15 | 1 | 0 | 5 | 3 |
| 2024/25 | Shonan Bellmare | 22 | 0 | 3 | 15 | 14 |
| 2023/24 | Shonan Bellmare | 26 | 1 | 1 | 18 | 18 |
| 2022/23 | Shonan Bellmare | 18 | 0 | 0 | 20 | 22 |
| 2021/22 | Shonan Bellmare | 25 | 1 | 0 | 23 | 23 |
| 2020/21 | Shonan Bellmare | 17 | 2 | 0 | 25 | 17 |
| 2019/20 | Vegalta Sendai | 17 | 1 | 0 | — | — |
| 2018/19 | Vegalta Sendai | 33 | 2 | 1 | — | — |
| 2017/18 | Vegalta Sendai | 34 | 3 | 0 | — | — |
| 2016/17 | Vegalta Sendai | 33 | 1 | 0 | — | — |
| 2015/16 | JEF United Chiba | 35 | 2 | 0 | — | — |
| 2014/15 | JEF United Chiba | 38 | 1 | 0 | — | — |
| 2013/14 | JEF United Chiba | 26 | 1 | 0 | — | — |
| 2012/13 | JEF United Chiba | 34 | 2 | 0 | — | — |
International
| Side | Season | Competition | Apps | G |
|---|---|---|---|---|
| Japan U20 | 2012/13 | Tournoi Maurice Revello | 3 | 0 |
Honours
Emperor Cup×2
By competition
| Competition | Apps | Min | G | A | Rating |
|---|---|---|---|---|---|
| J1 Leagueat Shonan Bellmare | 15 | 663 | 1 | 0 | 6.7 |
| J-League Cupat Shonan Bellmare | 2 | 193 | 0 | 0 | — |
Schedule · 2025/26
15 played15 unused sub· 663 min, 1g 0a
Played for Shonan Bellmare.
| Date | Competition | Opponent | Res | Status | Min | G | A | Rating |
|---|---|---|---|---|---|---|---|---|
| Feb 15 | J1 League | H Kashima | 1-0 | Unused sub | 0 | — | ||
| Feb 22 | J1 League | A Cerezo Osaka | 2-1 | Unused sub | 0 | — | ||
| Feb 26 | J1 League | H Urawa | 2-1 | Unused sub | 0 | — | ||
| Mar 1 | J1 League | A Yokohama F. Marinos | 1-1 | Played | 11 | 6.6 | ||
| Mar 8 | J1 League | A FC Tokyo | 0-0 | Unused sub | 0 | — | ||
| Mar 16 | J1 League | H Vissel Kobe | 1-2 | Unused sub | 0 | — | ||
| Apr 2 | J1 League | A Kawasaki Frontale | 0-2 | Unused sub | 0 | — | ||
| Apr 6 | J1 League | H Nagoya Grampus | 2-1 | Played | 13 | 6.7 | ||
| Apr 12 | J1 League | A Kyoto Sanga | 0-2 | Unused sub | 0 | — | ||
| Apr 20 | J1 League | H Kashiwa Reysol | 0-1 | Played | 11 | 7.0 | ||
| Apr 25 | J1 League | A Machida Zelvia | 1-0 | Unused sub | 0 | — | ||
| Apr 29 | J1 League | H Avispa Fukuoka | 0-0 | Played | 90 | 7.5 | ||
| May 3 | J1 League | A Gamba Osaka | 0-4 | Played | 90 | 6.2 | ||
| May 25 | J1 League | A Albirex Niigata | 1-2 | Unused sub | 0 | — | ||
| Jun 1 | J1 League | H Fagiano Okayama | 1-1 | Played | 90 | 7.0 | ||
| Jun 14 | J1 League | H Machida Zelvia | 1-2 | Unused sub | 0 | — | ||
| Jun 28 | J1 League | H Yokohama F. Marinos | 1-1 | Played | 30 | 6.6 | ||
| Jul 5 | J1 League | A Vissel Kobe | 0-4 | Played | 56 | 6.5 | ||
| Aug 10 | J1 League | A Kashiwa Reysol | 0-2 | Played | 26 | 6.5 | ||
| Aug 16 | J1 League | H FC Tokyo | 2-2 | Played | 13 | 6.5 | ||
| Aug 23 | J1 League | A Fagiano Okayama | 0-1 | Unused sub | 0 | — | ||
| Aug 31 | J1 League | H Gamba Osaka | 4-5 | Played | 28 | 1 | 7.2 | |
| Sep 20 | J1 League | A Nagoya Grampus | 1-3 | Unused sub | 0 | — | ||
| Sep 23 | J1 League | H Kawasaki Frontale | 1-2 | Played | 90 | 6.5 | ||
| Sep 28 | J1 League | A Yokohama FC | 0-1 | Unused sub | 0 | — | ||
| Oct 3 | J1 League | H Tokyo Verdy | 0-1 | Played | 90 | 6.9 | ||
| Oct 19 | J1 League | H Kyoto Sanga | 1-1 | Unused sub | 0 | — | ||
| Oct 26 | J1 League | A Avispa Fukuoka | 0-1 | Played | 11 | 6.5 | ||
| Nov 30 | J1 League | H Shimizu S-pulse | 1-0 | Played | 14 | 6.3 | ||
| Dec 6 | J1 League | A Sanfrecce Hiroshima | 1-2 | Unused sub | 0 | — |