Domestic-league season · Shonan Bellmare.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 15 | 1 | 0 | 663 | 6.7 |
 J-League Cup | 2 | 0 | 0 | 193 | — |
Oiwa's current-season form is down 79% on last season (Season 14→3), while his Rating eased 15→9. His peak season for form remains 2021/22 (Season 23).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Shonan Bellmare · 19th | 15 | 1 | 0 | 6.7 | 9 | 3 |
| 2024/25 | Shonan Bellmare · 15th | 22 | 0 | 3 | 6.8 | 15 | 14 |
| 2023/24 | Shonan Bellmare · 15th | 26 | 1 | 1 | 6.71 | 18 | 18 |
| 2022/23 | Shonan Bellmare · 12th | 18 | 0 | 0 | 6.82 | 20 | 22 |
| 2021/22 | Shonan Bellmare · 16th | 25 | 1 | 0 | 6.76 | 23 | 23 |
| 2020/21 | Shonan Bellmare · 18th | 17 | 2 | 0 | 6.83 | 25 | 17 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
K. Oiwa is a 36-year-old central defender at Shonan Bellmare, rated 9.4 overall by Field Insider's model, ranking 858th of 874 in the J3 League. A seasoned veteran, he has been a fringe squad member this season (19.4% of available minutes). His defensive output reads 1.77 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Oiwa.
Judged on this season alone, Oiwa graded 3 — a workmanlike campaign that ranks 199th of 204 of the 204 centre-backs in the J3 League, on 1 clean sheet and 1.765 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 14 → 3). Over the 6 seasons on record his form has drifted down, peaking in 2021/22.
On long-term talent our Rating reads 9, 204th of 204 of the 204 centre-backs in the J3 League. At 36 Oiwa is into the veteran stage, where the age curve weighs on the projection, and a market index of 2.1 reflects that trajectory.
Past his 2021/22 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
1.77 tackles, blocks & interceptions per 90 — light defensive volume, with 1 clean sheet across 15 appearances. Doing that for a relegation-threatened side (19th of 20) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight. Going forward he chipped in 1 goal and 0 assists — a useful bonus from the back.
With a Rating of 9.4, Oiwa carries the 204th-highest potential of the centre-backs in the J3 League of 204 — though on just 15 appearances this season, so the standing rests on a small sample. Defensively he reads as light defensive volume (1.77 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.6× and falling).
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~7), then tapers with age. At 36, Oiwa sits on 2.1, past its peak and easing. The blue line is Oiwa's projected Rating — 9.4 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.
No transfer news found for this player.
