T. Koyamatsu

Koyamatsu's current-season form is up 209% on last season (Season 11→34), while his Rating held around 30. His peak season for form remains 2021/22 (Season 35).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	Kashiwa Reysol · 2nd	37	3	10	7.05	30	34
2024/25	Kashiwa Reysol · 17th	33	0	1	6.59	30	11
2023/24	Kashiwa Reysol · 17th	30	1	1	6.62	33	18
2022/23	Kashiwa Reysol · 7th	33	4	5	6.76	45	28
2021/22	Sagan Tosu · 7th	37	6	3	6.85	52	35
2020/21	Sagan Tosu · 13th	33	2	3	6.73	52	31

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.

Scout report

Experienced headCreative Attacking midfielder

T. Koyamatsu is a 31-year-old attacking midfielder at Kashiwa Reysol, rated 30.3 overall by Field Insider's model, ranking 553rd of 874 in the J3 League. A seasoned veteran, he has been a regular starter this season (78.5% of available minutes). He brings 0.44 goal contributions per 90 (0.1 goals, 0.34 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koyamatsu.

Judged on this season alone, Koyamatsu graded 34 — an excellent campaign that ranks top 8% of the 71 attacking midfielders in the J3 League, on 3 goals and 10 assists in 37 appearances (0.436 involvements per 90).

Year-on-year, that's a clear step up on last season (Season 11 → 34). Over the 6 seasons on record his form has trended upward, peaking in 2021/22.

On long-term talent our Rating reads 30, 52nd of 71 of the 71 attacking midfielders in the J3 League. At 31 Koyamatsu is into the veteran stage, where the age curve weighs on the projection, and a market index of 10.4 reflects that trajectory.

From the career report

Read the full career report →

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

Peak: 2021/22Trending upBreakout: 2025/26

Current potential52nd of 71 attacking midfielders · J3 League Current seasonTop 8% attacking midfielders · J3 League5th-best attacking midfielder in the J3 League553rd in the J3 League · potential52nd-highest potential attacking midfielder in the J3 League

30.3

Ratingi

52nd of 71 attacking midfielders

33.6

Seasoni

below regular-starter level

78.5%

Minutes

a regular starter

0.44

Goal contrib / 90

productive for the role

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

Goals

Assists

G+A

0.08

Goals / app

3 goals in 37 appearances (0.08 per game) — light end product the role wants to see climb. He also laid on 10 assists, so the all-round involvement reads 13 goal contributions (0.35 per appearance).

Strengths

Availability. On the pitch for 78.5% of available minutes — a dependable presence in the XI.
Final-third output. 0.44 goal contributions per 90 (0.1 goals, 0.34 assists) — productive for the role.

Watch points

Defensive numbers. Modest 1.51 defensive actions per 90 for the position.
Age curve. At 31, 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 30.3, Koyamatsu carries the 52nd-highest potential of the attacking midfielders in the J3 League of 71. In the final third he profiles as a productive contributor (0.44 goal contributions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.9× and falling).

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

Per 90 & availability

Minutes played %78.5%

Available fixtures38 of 38

Goals / 900.101

Assists / 900.335

Goal contribution / 900.436

Defensive actions / 901.509

Player flow

Goal involvements13

Shot conversion %37.5

Shot accuracy %44.4

Dribble success %53.6

Cards / 900.034

Foul involvement / 900.805

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~23), then tapers with age. At 31, Koyamatsu sits on 10.4, past its peak and easing. The blue line is Koyamatsu's projected Rating — 30.3 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.