based on the 2026 season · updated 19 Oct 2026
Profile
Season stats
Full career & schedule →Domestic-league season · JEF United Chiba.
Scout report
R. Kuboniwa is a 25-year-old central defender at JEF United Chiba, rated 37.8 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (5.3% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kuboniwa.
On the season, Kuboniwa graded 0 for current form (age-blind), on 0 clean sheets and 0 defensive actions per 90.
We hold a single season for Kuboniwa, so there's no year-on-year comparison to draw yet — the read above is this campaign only.
On long-term talent our Rating reads 38. At 25 Kuboniwa is in his prime years, and a market index of 10.3 reflects that trajectory.
Output in context · JEF United Chiba finished 19th of 20 · a relegation-threatened side
0 tackles, blocks & interceptions per 90 — light defensive volume across 1 appearance. 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.
Watch points
- Game time. Only 5.3% of available minutes — needs a settled run to prove the level.
- Level. Rates below a nailed-on top-tier starter on our model.
Outlook
Rated 37.8 overall — developing / rotation level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.
Generated from Field Insider's rating model · AI-written analysis to follow.
Transfer news
No transfer news found for this player.
