Field Insider
Centre-backJapanJ3 League

Koutaro Yamahara

Squad depth★ Standout performerEhime FC · 26 yrsStarter
33.1
Ratingi
1.9
Seasoni
5.4
Valuei

based on the 2025 season · updated 18 Aug 2026

Profile

Full nameKoutaro Yamahara
PositionCentre-back
NationalityJapan
Age26
Date of birth19 Sept 2000
BirthplaceSaitama
Height182 cm
ClubEhime FC
More about K. Yamahara →
Centre-back

Season stats

Full career & schedule →
6
Appearances
1
Goals
0
Assists
467
Minutes

Domestic-league season · Ehime FC.

Scout report

★ Standout performer

All J3 League standouts →

One of the biggest game-time risers in the J3 League: on the pitch for 86% of Ehime FC's available minutes this season, up from 14% last year — a bench-to-starter jump the ratings will catch up with at the next checkpoint.

Squad depthCentral defender

K. Yamahara is a 26-year-old central defender at Ehime FC, rated 30.2 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (13.7% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Yamahara.

On the season, Yamahara graded 2 for current form (age-blind), on 1 clean sheet and 0 defensive actions per 90.

We hold a single season for Yamahara, 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 30. At 26 Yamahara is in his prime years, and a market index of 5.4 reflects that trajectory.

30.2
Ratingi
below regular-starter level
1.9
Seasoni
below regular-starter level
13.7%
Minutes
limited game time
0
Def. actions / 90
light defensive volume

Output in context · Ehime FC finished 20th of 20 · a relegation-threatened side

6
Apps
0
Def. / 90
—
Tackles
—
Interceptions
1
Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume, with 1 clean sheet across 6 appearances. Doing that for a relegation-threatened side (20th 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.

Strengths

  • Attacking threat. Chips in from deep: 0.19 goal involvements per 90, useful for a central defender.

Watch points

  • Game time. Only 13.7% of available minutes — needs a settled run to prove the level.
  • Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 30.2 overall — below regular-starter level. Defensively he reads as light defensive volume (0 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 J3 League with 600+ minutes this season.

Shooting

Goals1

Passing

Assists0

Yellow/red cards

Yellow cards0
Red cards0

Transfer news

No transfer news found for this player.