based on the 2025 season · updated 18 Aug 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Thespakusatsu Gunma.
Scout report
T. Koyanagi is a 36-year-old central defender at Thespakusatsu Gunma, rated 5.7 overall by Field Insider's model, ranking 260th of 267 on scout potential in the J3 League. A seasoned veteran, he has been a fringe squad member this season (22% of available minutes). His defensive output reads 1.56 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Koyanagi.
Judged on this season alone, Koyanagi graded 5 — a workmanlike campaign that ranks 53rd of 61 of the 61 centre-backs in the J3 League, on 2 clean sheets and 1.556 defensive actions per 90.
We hold a single season for Koyanagi, 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 6, 59th of 61 of the 61 centre-backs in the J3 League. At 36 Koyanagi is into the veteran stage, where the age curve weighs on the projection, and a market index of 0.2 reflects that trajectory.
Output in context · Thespakusatsu Gunma finished 14th of 20 · a lower-table side
1.56 tackles, blocks & interceptions per 90 — light defensive volume, with 2 clean sheets across 9 appearances. Doing that for a lower-table side (14th 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.
Watch points
- Game time. Only 22% of available minutes — needs a settled run to prove the level.
- Age curve. At 36, 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 5.7, Koyanagi carries the 59th-highest potential of the centre-backs in the J3 League of 61 — though on just 9 appearances this season, so the standing rests on a small sample. Defensively he reads as light defensive volume (1.56 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.
Season statistics
Bars = where he ranks among centre-backs 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.
