
Domestic-league season · Montedio Yamagata.
S. Kokubu is a 31-year-old central midfielder at Montedio Yamagata, rated 21 overall by Field Insider's model, ranking 710th of 874 in the J3 League. A seasoned veteran, he has been a fringe squad member this season (26% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kokubu.
Judged on this season alone, Kokubu graded 8 — a workmanlike campaign that ranks 135th of 241 of the 241 central midfielders in the J3 League, on 3 goals, 0 assists and 0 defensive actions per 90.
We hold a single season for Kokubu, 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 21, 203rd of 241 of the 241 central midfielders in the J3 League. At 31 Kokubu is into the veteran stage, where the age curve weighs on the projection, and a market index of 7.2 reflects that trajectory.
0 tackles, blocks & interceptions per 90 — light defensive volume, with 2 clean sheets across 12 appearances. Going forward he chipped in 3 goals and 0 assists — a useful bonus from the back.
With a Rating of 21, Kokubu carries the 203rd-highest potential of the central midfielders in the J3 League of 241 — though on just 12 appearances this season, so the standing rests on a small sample. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.9× 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 (~16), then tapers with age. At 31, Kokubu sits on 7.2, past its peak and easing. The blue line is Kokubu's projected Rating — 21 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.