based on the 2025 season · updated 18 Aug 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Montedio Yamagata.
Scout report
S. Kokubu is a 31-year-old central midfielder at Montedio Yamagata, rated 16.8 overall by Field Insider's model, ranking 175th of 226 on scout potential in the J2 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 9 — a solid campaign that ranks top 32% of the 70 central midfielders in the J2 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 17, 57th of 70 of the 70 central midfielders in the J2 League. At 31 Kokubu is into the veteran stage, where the age curve weighs on the projection, and a market index of 1.4 reflects that trajectory.
Output in context · Montedio Yamagata finished 10th of 20 · a mid-table side
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.
Strengths
- Attacking threat. Chips in from deep: 0.3 goal involvements per 90, useful for a central midfielder.
Watch points
- Game time. Only 26% of available minutes — needs a settled run to prove the level.
- Age curve. At 31, both level and resale value are on the downslope.
- Level. Rates below a nailed-on top-tier starter on our model.
Outlook
With a Rating of 16.8, Kokubu carries the 57th-highest potential of the central midfielders in the J2 League of 70 — 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.
Season statistics
Bars = where he ranks among central midfielders in the J2 League with 600+ minutes this season.
Shooting
Passing
Yellow/red cards
Transfer news
No transfer news found for this player.
