based on the 2026 season · updated 19 Oct 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Kashiwa Reysol.
Performance data · by competition
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 1 | 0 | 0 | 90 | 7 |
Scout report
T. Koga is a 27-year-old central defender at Kashiwa Reysol, rated 40.3 overall by Field Insider's model, ranking 19th of 193 on scout potential in the J1 League. In his prime years, he has been a rotation option this season (52.6% of available minutes). His defensive output reads 2.8 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 11 — a workmanlike campaign that ranks 31st of 37 of the 37 centre-backs in the J1 League, on 1 clean sheet and 2.8 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 69 → 11). Over the 7 seasons on record his form has drifted down, peaking in 2025/26.
On long-term talent our Rating reads 40, top 6% of the 37 centre-backs in the J1 League. At 27 Koga is in his prime years, and a market index of 11 reflects that trajectory.
Past his 2025/26 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
Output in context · Kashiwa Reysol finished 5th of 20 · an upper-table side
2.8 tackles, blocks & interceptions per 90 — moderate defensive volume, with 1 clean sheet across 10 appearances. Behind an upper-table side (5th of 20) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume.
Watch points
- Game time. Only 52.6% 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 40.3, Koga carries the 2nd-highest potential of the centre-backs in the J1 League of 37 — though on just 10 appearances this season, so the standing rests on a small sample. Defensively he reads as moderate defensive volume (2.8 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 centre-backs in the J1 League with 600+ minutes this season.
Shooting
Passing
Possession
Defending
Yellow/red cards
Transfer news
No transfer news found for this player.
