R. Kojima

Following his move to Kashiwa Reysol, Kojima's current-season form is up 414% on last season (Season 14→72), while his Rating eased 44→42. That makes this his strongest season for form to date.

Domestic career

Season	Club	Apps	CS	CS%	Match	RTG	Season
2026/27	Kashiwa Reysol	17	0	0%	6.88	—	—
2025/26	Kashiwa Reysol · 2nd	38	19	50%	6.95	42	72
2024/25	Albirex Niigata · 16th	33	7	21%	6.94	44	14
2023/24	Albirex Niigata · 10th	30	10	33%	6.98	49	33
2023/24	Kashiwa Reysol	29	0	0%	6.98	—	—
2022/23	Albirex Niigata	42	0	0%	—	—	—

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 3 earlier seasons in the full career.

Japan · international

Side	Apps	G
Japan U23	9	0
Japan U20	4	0

Career caps & goals — tournament breakdown in the full career.

Scout report

Project playerGoalkeeper

R. Kojima is a 29-year-old goalkeeper at Kashiwa Reysol, enjoying a standout season — 0 goals and 0 assists in 38 appearances, a Season grade of 72, top 3% of J1 League goalkeepers. On long-term scout potential he's rated 41.5, ranking 115th of 377 in the J1 League. An experienced operator, he has been an ever-present (100% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kojima.

Judged on this season alone, Kojima graded 72 — a standout campaign that ranks top 4% of the 31 goalkeepers in the J1 League, on 19 clean sheets across 38 appearances.

Year-on-year, that's a clear step up on last season (Season 14 → 72). Across the 3 seasons we hold, it's his best return yet.

On long-term talent our Rating reads 42, top 30% of the 31 goalkeepers in the J1 League. At 29 Kojima is in his prime years, and a market index of 10.4 reflects that trajectory.

From the career report

Read the full career report →

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

Peak: 2025/26Trending upBreakout: 2025/26Streaky

Current potentialTop 30% goalkeepers · J1 League Current seasonTop 4% goalkeepers · J1 League1st-best goalkeeper in the J1 League115th in the J1 League · potential9th-highest potential goalkeeper in the J1 League

41.5

Ratingi

9th of 31 goalkeepers

71.6

Seasoni

elite — among the best in the position

100%

Minutes

near ever-present

0.05

Def. actions / 90

light defensive volume

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

Apps

Clean sheets

50%

CS rate

100%

Minutes

19 clean sheets in 38 appearances (50% of games). Playing behind a title-challenging side (2nd of 20) means a more protected goal, so the read is about command and distribution as much as raw shut-outs.

Strengths

Availability. On the pitch for 100% of available minutes — a dependable presence in the XI.

Watch points

Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 41.5, Kojima carries the 9th-highest potential of the goalkeepers in the J1 League (top 30%). A near ever-present keeper carrying the gloves this season. Experienced and reliable, but the value curve is easing (1.1× now → 0.8× projected in three years).

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

Per 90 & availability

Minutes played %100%

Available fixtures38 of 38

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900.053

Player flow

Goal involvements0

Cards / 900.026

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 (~19), then tapers with age. At 29, Kojima sits on 10.4, past its peak and easing. The blue line is Kojima's projected Rating — 41.5 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.