based on the 2026 season · updated 19 Oct 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Kawasaki Frontale.
Performance data · by competition
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 1 | 0 | 0 | 90 | 6.7 |
Scout report
R. Yamahara is a 27-year-old full-back at Kawasaki Frontale, rated 40.8 overall by Field Insider's model, ranking 41st of 193 on scout potential in the J1 League. In his prime years, he has been a rotation option this season (42.9% of available minutes). His defensive output reads 1.1 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Yamahara.
Judged on this season alone, Yamahara graded 5 — a workmanlike campaign that ranks 22nd of 23 of the 23 full-backs in the J1 League, on 1 clean sheet and 1.104 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 22 → 5). Over the 4 seasons on record his form has trended upward, peaking in 2025/26.
On long-term talent our Rating reads 41, top 27% of the 23 full-backs in the J1 League. At 27 Yamahara is in his prime years, and a market index of 11.2 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 · Kawasaki Frontale finished 7th of 20 · a mid-table side
1.1 tackles, blocks & interceptions per 90 — light defensive volume, with 1 clean sheet across 9 appearances. Going forward he chipped in 0 goals and 2 assists — a useful bonus from the back.
Strengths
- Attacking threat. Chips in from deep: 0.25 goal involvements per 90, useful for a full-back.
Watch points
- Game time. Only 42.9% of available minutes — needs a settled run to prove the level.
- Defensive numbers. Modest 1.1 defensive actions per 90 for the position.
- Level. Rates below a nailed-on top-tier starter on our model.
Outlook
With a Rating of 40.8, Yamahara carries the 6th-highest potential of the full-backs in the J1 League of 23 — though on just 9 appearances this season, so the standing rests on a small sample. Defensively he reads as light defensive volume (1.1 tackles, blocks & interceptions per 90), with a bit more on the ball than most in the role. 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 full-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.
