Kazuki Kozuka

Kozuka's current-season form is level with last season (Season 7→7), while his Rating held around 16. His peak season for form remains 2025/26 (Season 7).

Domestic career

Season	Club	Apps	G	Match	RTG	Season
2027/28	Shimizu S-pulse · 15th	1	0	6.6	16	7
2026/27	Shimizu S-pulse	17	1	6.64	—	—
2025/26	Shimizu S-pulse · 14th	17	2	6.85	16	7
2024/25	Suwon Bluewings	11	0	—	—	—
2024/25	Seoul E-Land FC	20	1	—	—	—
2023/24	Suwon Bluewings · 6th	8	1	6.83	27	5
2023/24	Kawasaki Frontale · 8th	7	0	6.28	28	0

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 8 earlier seasons in the full career.

Scout report

Experienced headDefensive midfielder

K. Kozuka is a 32-year-old defensive midfielder at Shimizu S-pulse, rated 15.7 overall by Field Insider's model. A seasoned veteran, he has been a fringe squad member this season (12.8% of available minutes). His defensive output reads 1.85 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Kozuka.

On the season, Kozuka graded 8 for current form (age-blind), on 2 goals, 0 assists and 1.854 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 7 → 7). Over the 6 seasons on record his form has held fairly steady, peaking in 2025/26.

On long-term talent our Rating reads 16. At 32 Kozuka is into the veteran stage, where the age curve weighs on the projection, and a market index of 1.7 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

15.7

Ratingi

below regular-starter level

8.2

Seasoni

below regular-starter level

12.8%

Minutes

limited game time

1.85

Def. actions / 90

light defensive volume

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

Apps

1.85

Def. / 90

Tackles

Interceptions

Clean sheets

1.85 tackles, blocks & interceptions per 90 — light defensive volume, with 2 clean sheets across 17 appearances. Doing that for a lower-table side (14th 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 2 goals and 0 assists — a useful bonus from the back.

Strengths

Attacking threat. Chips in from deep: 0.41 goal involvements per 90, useful for a defensive midfielder.

Watch points

Game time. Only 12.8% of available minutes — needs a settled run to prove the level.
Age curve. At 32, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 15.7 overall — below regular-starter level. Defensively he reads as light defensive volume (1.85 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.8× 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

Cards / 900.206

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 (~4), then tapers with age. At 32, Kozuka sits on 1.7, past its peak and easing. The blue line is Kozuka's projected Rating — 15.7 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.

Season statistics

Bars = where he ranks among defensive midfielders in the J1 League with 600+ minutes this season.

Shooting

Goals2—

Passing

Assists0—

Defending

Tackles6—

Interceptions3—

Yellow/red cards

Yellow cards1

Red cards0

Transfer history

Shimizu S-pulseJan 2025 – now

FC Seouluntil Jan 2025

SSuwon BluewingsJul 2023 – Jan 2025

Kawasaki FrontaleJan 2021 – Jul 2023Free

Oita Trinitauntil Jan 2021

About K. Kozuka

Kazuki Kozuka is a 32-year-old defensive midfielder who plays for Shimizu S-pulse, born on August 2, 1994 in Mitsuke, standing 173 cm tall. He is from Japan. Shimizu S-pulse currently sit 15th of 20 in the J1 League.

This season

In the current season, K. Kozuka has made 1 appearances with 0 goals and 0 assists across 14 minutes.

K. Kozuka's next match is on August 29, 2026, when Shimizu S-pulse face Kashiwa Reysol at home in the J1 League.

Field Insider's view

Field Insider currently rates K. Kozuka at 15.7 with a Season form score of 8.2. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 4 career titles — among them the Super Cup and the J1 League. Full list in the career record.

Career

Across 13 recorded seasons, K. Kozuka has totalled 215 club appearances with 22 goals and 8 assists for 8 different clubs. His busiest campaign came in 2017/18, with 39 appearances for Renofa Yamaguchi.

K. Kozuka's career has also included time at FC Seoul, SSuwon Bluewings, Kawasaki Frontale and Oita Trinita.

Transfer news

No transfer news found for this player.