K. Kozuka

Following his move to Shimizu S-pulse, Kozuka's current-season form is level with last season (Season 5→6), while his Rating eased 27→19. That makes this his strongest season for form to date.

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	Shimizu S-pulse · 14th	17	2	0	6.85	19	6
2023/24	Suwon Bluewings · 6th	8	1	0	6.83	27	5
2022/23	Kawasaki Frontale · 2nd	12	0	2	6.84	36	5
2021/22	Kawasaki Frontale · 1st	5	0	0	6.93	38	1
2020/21	Oita Trinita · 11th	8	1	1	6.79	44	6

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

Scout report

Experienced headAttacking midfielder

K. Kozuka is a 31-year-old attacking midfielder at Shimizu S-pulse, rated 18.7 overall by Field Insider's model. A seasoned veteran, he has been a fringe squad member this season (12.8% of available minutes). He brings 0.41 goal contributions per 90 (0.41 goals, 0 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kozuka.

On the season, Kozuka graded 6 for current form (age-blind), on 2 goals and 0 assists in 17 appearances (0.412 involvements per 90).

Year-on-year, that's broadly in line with last season (Season 5 → 6). Across the 5 seasons we hold, it's his best return yet.

On long-term talent our Rating reads 19. At 31 Kozuka is into the veteran stage, where the age curve weighs on the projection, and a market index of 6.4 reflects that trajectory.

From the career report

Read the full career report →

Kozuka is operating at his career peak — the 2025/26 level is the level.

Peak: 2025/26Holding levelRemarkably consistent4 clubs

18.7

Ratingi

below regular-starter level

6.3

Seasoni

below regular-starter level

12.8%

Minutes

limited game time

0.41

Goal contrib / 90

productive for the role

Output in context · Shimizu S-pulse finished 14th of 20 · a lower-table side

Goals

Assists

G+A

0.12

Goals / app

2 goals in 17 appearances (0.12 per game) — light end product the role wants to see climb.

Strengths

Final-third output. 0.41 goal contributions per 90 (0.41 goals, 0 assists) — productive for the role.

Watch points

Game time. Only 12.8% of available minutes — needs a settled run to prove the level.
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

Rated 18.7 overall — below regular-starter level. In the final third he profiles as a productive contributor (0.41 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 %12.8%

Available fixtures38 of 38

Goals / 900.412

Assists / 900

Goal contribution / 900.412

Defensive actions / 901.854

Player flow

Goal involvements2

Shot conversion %50

Shot accuracy %44.4

Dribble success %82.4

Cards / 900.206

Foul involvement / 903.707

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 (~14), then tapers with age. At 31, Kozuka sits on 6.4, past its peak and easing. The blue line is Kozuka's projected Rating — 18.7 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.