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Profile

Full nameKoki Kumasaka
PositionDefensive midfielder
NationalityJapan
Age25
Date of birth15 Apr 2001
BirthplaceSaitama
Height185 cm
Shirt number#27
ClubKashiwa Reysol
Defensive midfielder
18
Appearances
0
Goals
0
Assists
1575
Minutes

Domestic-league season · Kashiwa Reysol.

Injury-affected season

Missed 4 of Kashiwa Reysol's ~38 games this season through 4 injury absences (cruciate ligament). He still appeared 18 times — a solid return given how little of the season he was available. His rating is judged mainly on the games he was fit to play.

Performance data · by competition

CompetitionAppsGAMinMatch
J1 League180015757.14
J-League Cup10044

Scout report

Squad depthBall-winning Defensive midfielder

K. Kumasaka is a 25-year-old defensive midfielder at Kashiwa Reysol, rated 49.7 overall by Field Insider's model, ranking 45th of 377 on scout potential in the J1 League. In his prime years, he has been a rotation option this season (51.5% of available minutes). His defensive output reads 4.91 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Kumasaka.

Judged on this season alone, Kumasaka graded 18 — a workmanlike campaign that ranks 34th of 49 of the 49 defensive midfielders in the J1 League, on 0 goals, 0 assists and 4.914 defensive actions per 90.

Year-on-year, that's a clear step up on last season (Season 3 → 18).

On long-term talent our Rating reads 50, top 13% of the 49 defensive midfielders in the J1 League. At 25 Kumasaka is in his prime years, and a market index of 13.6 reflects that trajectory.

Read the appearance count in context: Kumasaka missed 4 games through injury (cruciate ligament) out of roughly 38 this season. The 18 he did play is a solid return on the time he was fit, and his ratings are weighted toward those games rather than the ones he sat out injured.

From the career report
Read the full career report →

A career still climbing — Kumasaka is at his peak right now, and the curve hasn't flattened.

Peak: 2025/26Trending up
Current potentialTop 13% defensive midfielders · J1 LeagueCurrent season34th of 49 defensive midfielders · J1 League34th-best defensive midfielder in the J1 League45th in the J1 League · potential6th-highest potential defensive midfielder in the J1 League
49.7
Ratingi
6th of 49 defensive midfielders
17.5
Seasoni
below regular-starter level
51.5%
Minutes
rotation minutes
4.91
Def. actions / 90
solid defensive volume

Output in context · Kashiwa Reysol finished 2nd of 20 · a title-challenging side

4.91
Def. / 90
52
Tackles
27
Interceptions
9
Clean sheets

4.91 tackles, blocks & interceptions per 90 — solid defensive volume, with 9 clean sheets across 18 appearances. Behind a title-challenging side (2nd 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.

Strengths

  • Defensive volume. 4.91 tackles, blocks & interceptions per 90 — does the unseen work.

Watch points

  • Game time. Only 51.5% of available minutes — needs a settled run to prove the level.

Outlook

With a Rating of 49.7, Kumasaka carries the 6th-highest potential of the defensive midfielders in the J1 League (top 13%). Defensively he reads as solid defensive volume (4.91 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.

Generated from Field Insider's rating model · AI-written analysis to follow.

Transfer news

No transfer news found for this player.