Shimon Kobayashi

Kobayashi's current-season form is level with last season (Season 0→0), while his Rating held around 46. His peak season for form remains 2025/26 (Season 0).

Domestic career

Season	Club	Apps	Match	RTG	Season
2027/28	Sanfrecce Hiroshima · 4th	2	6.3	46	0
2026/27	Sanfrecce Hiroshima	1	7	—	—
2025/26	Sanfrecce Hiroshima · 4th	1	6.3	46	0

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

Japan · international

Side	Apps	G
Japan U17	3	0

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

Scout report

Squad depthCentral midfielder

S. Kobayashi is a 18-year-old central midfielder at Sanfrecce Hiroshima, rated 45.8 overall by Field Insider's model. A teenage prospect, he has been a fringe squad member this season (0.2% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kobayashi.

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

Year-on-year, that's broadly in line with last season (Season 0 → 0).

On long-term talent our Rating reads 46. At 18 Kobayashi is still climbing toward his ceiling, and a market index of 9.4 reflects that trajectory.

45.8

Ratingi

developing / rotation level

Seasoni

below regular-starter level

0.2%

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · Sanfrecce Hiroshima finished 4th of 20 · an upper-table side

Apps

Def. / 90

—

Tackles

—

Interceptions

Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume across 1 appearance. Behind an upper-table side (4th of 20) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume.

Watch points

Game time. Only 0.2% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 45.8 overall — developing / rotation level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). At 18 the trajectory points up — potential sits near its ceiling (100/100) and market value should climb as minutes and output follow.

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

Per 90 & availability

Minutes played %0.2%

Available fixtures38 of 38

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Cards / 900

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 (~13), then tapers with age. At 18, Kobayashi sits on 9.4, still climbing toward its peak. The blue line is Kobayashi's projected Rating — 45.8 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.

About S. Kobayashi

Shimon Kobayashi is a 18-year-old central midfielder who plays for Sanfrecce Hiroshima, born on January 23, 2008, standing 161 cm tall. He is from Japan. Sanfrecce Hiroshima currently sit 4th of 20 in the J1 League.

This season

In the current season, S. Kobayashi has made 2 appearances with 0 goals and 0 assists across 32 minutes.

S. Kobayashi's next match is on August 29, 2026, when Sanfrecce Hiroshima face Gamba Osaka away in the J1 League.

Field Insider's view

Field Insider currently rates S. Kobayashi at 45.8 with a Season form score of 0. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 2 career titles — among them the Super Cup. Full list in the career record.

Career

Across 3 recorded seasons, S. Kobayashi has totalled 4 club appearances with 0 goals and 0 assists for 1 club. His busiest campaign came in 2027/28, with 2 appearances for Sanfrecce Hiroshima.

On the international stage, S. Kobayashi has represented Japan U17 — 3 caps in our records.

Transfer news

No transfer news found for this player.