Ahn Joon-Soo

Joon-Soo's current-season form is down 77% on last season (Season 13→3), while his Rating eased 45→31. His peak season for form remains 2024/25 (Season 13).

Domestic career

Season	Club	Apps	CS	CS%	Match	RTG	Season
2025/26	Suwon City FC · 3rd	31	2	6%	7.02	31	3
2024/25	Suwon City FC · 5th	34	7	21%	6.88	45	13
2023/24	Jeonnam Dragons	18	0	0%	—	—	—
2022/23	Busan I Park	17	0	0%	—	—	—
2021/22	Busan I Park	15	0	0%	—	—	—

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 3 earlier seasons and 1 youth-team spell in the full career.

Korea Republic · international

Side	Apps	G
Korea Republic U17	3	0

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

Scout report

Squad depthGoalkeeper

Ahn Joon-Soo is a 28-year-old goalkeeper at Gimcheon Sangmu FC, rated 32.9 overall by Field Insider's model, ranking 43rd of 83 on scout potential in the K League 1. An experienced operator, he has been a rotation option this season (40.6% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Joon-Soo.

Judged on this season alone, Joon-Soo graded 4 — a workmanlike campaign that ranks 11th of 13 of the 13 goalkeepers in the K League 1, on 2 clean sheets across 31 appearances.

Year-on-year, that's a drop on last season (Season 13 → 3).

On long-term talent our Rating reads 33, top 31% of the 13 goalkeepers in the K League 1. At 28 Joon-Soo is in his prime years, and a market index of 4.8 reflects that trajectory.

From the career report

Read the full career report →

Past his 2024/25 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2024/25Trending down

Current potentialTop 31% goalkeepers · K League 1 Current season11th of 13 goalkeepers · K League 1 11th-best goalkeeper in the K League 1 43rd in the K League 1 · potential 4th-highest potential goalkeeper in the K League 1

32.9

Ratingi

4th of 13 goalkeepers

3.6

Seasoni

below regular-starter level

40.6%

Minutes

rotation minutes

0.16

Def. actions / 90

light defensive volume

Output in context · Gimcheon Sangmu FC finished 11th of 12 · a relegation-threatened side

Apps

Clean sheets

CS rate

40.6%

Minutes

2 clean sheets in 31 appearances (6% of games). Keeping that many behind a relegation-threatened side (11th of 12) — a side that concedes more — points to a busy, productive season between the posts.

Watch points

Game time. Only 40.6% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 32.9, Joon-Soo carries the 4th-highest potential of the goalkeepers in the K League 1 (top 31%), and he is posting that for a relegation-threatened side (Gimcheon Sangmu FC finished 11th of 12) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. A rotation minutes keeper carrying the gloves this season. Experienced and reliable, but the value curve is easing (1.2× now → 0.9× projected in three years).

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

Per 90 & availability

Minutes played %40.6%

Available fixtures31 of 25

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900.159

Player flow

Goal involvements0

Cards / 900.398

Foul involvement / 900.318

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 (~8), then tapers with age. At 28, Joon-Soo sits on 4.8, past its peak and easing. The blue line is Joon-Soo's projected Rating — 32.9 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 goalkeepers in the K League 1 with 600+ minutes this season.

Goalkeeping

Clean sheets2

Penalties conceded1—

Distribution

Passes391

Yellow/red cards

Yellow cards5

Red cards0

Transfer history

Gimcheon Sangmu FC(on loan)Jan 2026 – now

Suwon City FCJan 2024 – Jan 2026Free

JJeonnam Dragonsuntil Jan 2024

BBusan I ParkJan 2021 – Jan 2024Free

Cerezo Osaka(back from loan)Jan 2020 – Jan 2021

Kagoshima United(on loan)Feb 2018 – Jan 2020

Cerezo Osakauntil Feb 2018

About Ahn Joon-Soo

Joon-Soo Ahn is a 28-year-old goalkeeper who plays for Gimcheon Sangmu FC, born on January 28, 1998 in Uijeongbu, standing 188 cm tall. He is from Korea Republic. Gimcheon Sangmu FC currently sit 11th of 12 in the K League 1.

This season

In the current season, Ahn Joon-Soo has made 31 appearances with 0 goals and 0 assists across 1,132 minutes, with 5 yellow cards.

Ahn Joon-Soo's next match is on August 29, 2026, when Gimcheon Sangmu FC face Ulsan Hyundai FC away in the K League 1.

Field Insider's view

Field Insider currently rates Ahn Joon-Soo at 32.9 with a Season form score of 3.6, ranking 43rd of 83 goalkeepers in the K League 1. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 4 career titles — among them the AFC U23 Asian Cup and the Emperor Cup. Full list in the career record.

Career

Across 8 recorded seasons, Ahn Joon-Soo has totalled 193 club appearances with 0 goals and 0 assists for 6 different clubs. His busiest campaign came in 2019/20, with 36 appearances for Kagoshima United.

Ahn Joon-Soo's career has also included time at Suwon City FC, JJeonnam Dragons, BBusan I Park, Cerezo Osaka and Kagoshima United.

On the international stage, Ahn Joon-Soo has represented Korea Republic U17 — 3 caps in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Career

Scout report

Output in context · Gimcheon Sangmu FC finished 11th of 12 · a relegation-threatened side

Watch points