based on the 2025 season · updated 18 Aug 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Parceiro Nagano.
Scout report
S. Koga is a 27-year-old central midfielder at Parceiro Nagano, rated 20.2 overall by Field Insider's model, ranking 134th of 267 on scout potential in the J3 League. In his prime years, he has been a rotation option this season (41.4% of available minutes). His defensive output reads 3.18 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Koga.
Judged on this season alone, Koga graded 15 — an excellent campaign that ranks top 13% of the 96 central midfielders in the J3 League, on 1 goal, 1 assist and 3.176 defensive actions per 90.
We hold a single season for Koga, 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 20, 45th of 96 of the 96 central midfielders in the J3 League. At 27 Koga is in his prime years, and a market index of 2.2 reflects that trajectory.
Output in context · Parceiro Nagano finished 19th of 20 · a relegation-threatened side
3.18 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 19 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 1 assist — a useful bonus from the back.
Watch points
- Game time. Only 41.4% of available minutes — needs a settled run to prove the level.
- Level. Rates below a nailed-on top-tier starter on our model.
Outlook
With a Rating of 20.2, Koga carries the 45th-highest potential of the central midfielders in the J3 League of 96, and he is posting that for a relegation-threatened side (Parceiro Nagano finished 19th of 20) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. Defensively he reads as moderate defensive volume (3.18 tackles, blocks & interceptions per 90). In the prime window — at or near peak market value, so the next two seasons are the ones to cash in or build around.
Generated from Field Insider's rating model · AI-written analysis to follow.
Season statistics
Bars = where he ranks among central midfielders in the J3 League with 600+ minutes this season.
Shooting
Passing
Defending
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Transfer news
No transfer news found for this player.
