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 Suwon City FC, rated 30.8 overall by Field Insider's model, ranking 55th of 148 on scout potential in the K League 1. An experienced operator, he has been a fringe squad member this season (31.4% 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 3 — 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 31, top 24% of the 13 goalkeepers in the K League 1. At 28 Joon-Soo is in his prime years, and a market index of 4.5 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 24% goalkeepers · K League 1 Current season11th of 13 goalkeepers · K League 111th-best goalkeeper in the K League 155th in the K League 1 · potential3rd-highest potential goalkeeper in the K League 1

30.8

Ratingi

3rd of 13 goalkeepers

2.8

Seasoni

below regular-starter level

31.4%

Minutes

limited game time

0.16

Def. actions / 90

light defensive volume

Output in context · Suwon City FC finished 3rd of 6 · a mid-table side

Apps

Clean sheets

CS rate

31.4%

Minutes

2 clean sheets in 31 appearances (6% of games).

Watch points

Game time. Only 31.4% 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 30.8, Joon-Soo carries the 3rd-highest potential of the goalkeepers in the K League 1 (top 24%). A limited game time 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 %31.4%

Available fixtures40 of 40

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 4.5, past its peak and easing. The blue line is Joon-Soo's projected Rating — 30.8 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.