Kei Koizumi

Following his move to Shimizu S-pulse, Koizumi's current-season form is level with last season (Season 24→24), while his Rating held around 23. His peak season for form remains 2022/23 (Season 38).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2027/28	Shimizu S-pulse · 15th	3	0	0	6.63	23	24
2026/27	FC Tokyo	10	0	1	6.88	—	—
2025/26	FC Tokyo · 11th	30	1	2	6.79	24	24
2024/25	FC Tokyo · 7th	34	1	1	6.82	35	25
2023/24	FC Tokyo · 11th	31	1	0	6.65	40	29

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 9 earlier seasons in the full career.

Scout report

Experienced headDefensive midfielder

K. Koizumi is a 31-year-old defensive midfielder at FC Tokyo, enjoying a standout season — 1 goals and 2 assists in 30 appearances, a Season grade of 24. On long-term scout potential he's rated 23.7. A seasoned veteran, he has been a rotation option (50.6% of available minutes). His defensive output reads 3.49 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Koizumi.

On the season, Koizumi graded 24 for current form (age-blind), on 1 goal, 2 assists and 3.488 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 24 → 24). Over the 7 seasons on record his form has held fairly steady, peaking in 2022/23.

On long-term talent our Rating reads 24. At 31 Koizumi is into the veteran stage, where the age curve weighs on the projection, and a market index of 4.9 reflects that trajectory.

From the career report

Read the full career report →

Below his 2022/23 peak but holding a solid level — the platform for a return is there.

Peak: 2022/23Holding levelBreakout: 2022/23Remarkably consistent4 clubs

23.7

Ratingi

below regular-starter level

23.8

Seasoni

below regular-starter level

50.6%

Minutes

rotation minutes

3.49

Def. actions / 90

moderate defensive volume

Output in context · FC Tokyo finished 11th of 20 · a mid-table side

Apps

3.49

Def. / 90

Tackles

Interceptions

Clean sheets

3.49 tackles, blocks & interceptions per 90 — moderate defensive volume, with 6 clean sheets across 30 appearances. Going forward he chipped in 1 goal and 2 assists — a useful bonus from the back.

Strengths

Attacking threat. Chips in from deep: 0.16 goal involvements per 90, useful for a defensive midfielder.

Watch points

Game time. Only 50.6% 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 23.7 overall — below regular-starter level. Defensively he reads as moderate defensive volume (3.49 tackles, blocks & interceptions 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 %50.6%

Available fixtures38 of 38

Goals / 900.052

Assists / 900.104

Goal contribution / 900.156

Defensive actions / 903.488

Player flow

Goal involvements3

Cards / 900.208

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 (~11), then tapers with age. At 31, Koizumi sits on 4.9, past its peak and easing. The blue line is Koizumi's projected Rating — 23.7 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

Goals1—

Passing

Assists2—

Defending

Tackles32—

Interceptions33—

Blocks2—

Yellow/red cards

Yellow cards4

Red cards0

Transfer history

Shimizu S-pulseJun 2026 – now

FC TokyoJan 2023 – Jun 2026

Sagan TosuAug 2021 – Jan 2023

KashimaJul 2019 – Aug 2021

Kashiwa ReysolJan 2018 – Jul 2019

Albirex Niigatauntil Jan 2018

About K. Koizumi

Kei Koizumi is a 31-year-old defensive midfielder who plays for Shimizu S-pulse, born on April 19, 1995 in Tokyo, 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. Koizumi has made 3 appearances with 0 goals and 0 assists across 64 minutes.

K. Koizumi'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. Koizumi at 23.7 with a Season form score of 23.8. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 14 recorded seasons, K. Koizumi has totalled 353 club appearances with 10 goals and 9 assists for 6 different clubs. His busiest campaign came in 2024/25, with 34 appearances for FC Tokyo.

K. Koizumi's career has also included time at FC Tokyo, Sagan Tosu, Kashima, Kashiwa Reysol and Albirex Niigata.

Transfer news

No transfer news found for this player.