Missed 6 of Pohang Steelers's ~38 games this season through 6 injury absences (unknown). He still appeared 24 times — a solid return given how little of the season he was available. His rating is judged mainly on the games he was fit to play.

Performance data · by competition

Competition	Apps	G	A	Min	Match
K League 1at FC Seoul	8	0	0	180	7.1
AFC Champions League Two	3	0	0	177	6.83

Career

Full career & schedule →

Following his move to Pohang Steelers, Sung-Yueng's current-season form is level with last season (Season 14→13), while his Rating eased 13→8. His peak season for form remains 2021/22 (Season 33).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	Pohang Steelers · 4th	16	0	2	7.1	8	13
2024/25	FC Seoul · 4th	20	2	1	7.05	13	14
2023/24	FC Seoul · 1st	35	2	2	7.12	18	22
2022/23	FC Seoul · 3rd	35	0	2	7.12	20	26
2021/22	FC Seoul · 3rd	35	3	2	7.16	23	33
2020/21	FC Seoul · 3rd	5	0	0	6.5	16	2

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

Scout report

Experienced headCentral midfielder

Ki Sung-Yueng is a 37-year-old central midfielder at Pohang Steelers, rated 7.8 overall by Field Insider's model, ranking 145th of 148 in the K League 1. A seasoned veteran, he has been a rotation option this season (39.4% of available minutes). His defensive output reads 1.66 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Sung-Yueng.

Judged on this season alone, Sung-Yueng graded 13 — a workmanlike campaign that ranks 22nd of 48 of the 48 central midfielders in the K League 1, on 0 goals, 2 assists and 1.664 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 14 → 13). Over the 6 seasons on record his form has trended upward, peaking in 2021/22.

On long-term talent our Rating reads 8, 48th of 48 of the 48 central midfielders in the K League 1. At 37 Sung-Yueng is into the veteran stage, where the age curve weighs on the projection, and a market index of 1.3 reflects that trajectory.

Read the appearance count in context: Sung-Yueng missed 6 games through injury (unknown) out of roughly 38 this season. The 24 he did play is a solid return on the time he was fit, and his ratings are weighted toward those games rather than the ones he sat out injured.

From the career report

Read the full career report →

Past his 2021/22 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2021/22Trending downInjury-hit 2025/26

Current potential48th of 48 central midfielders · K League 1 Current season22nd of 48 central midfielders · K League 122nd-best central midfielder in the K League 1145th in the K League 1 · potential48th-highest potential central midfielder in the K League 1

7.8

Ratingi

48th of 48 central midfielders

12.9

Seasoni

below regular-starter level

39.4%

Minutes

rotation minutes

1.66

Def. actions / 90

light defensive volume

Output in context · Pohang Steelers finished 4th of 6 · a relegation-threatened side

1.66

Def. / 90

Tackles

Interceptions

Clean sheets

1.66 tackles, blocks & interceptions per 90 — light defensive volume, with 4 clean sheets across 24 appearances. Doing that for a relegation-threatened side (4th of 6) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight. Going forward he chipped in 0 goals 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 central midfielder.

Watch points

Game time. Only 39.4% of available minutes — needs a settled run to prove the level.
Defensive numbers. Modest 1.66 defensive actions per 90 for the position.
Age curve. At 37, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 7.8, Sung-Yueng carries the 48th-highest potential of the central midfielders in the K League 1 of 48, and he is posting that for a relegation-threatened side (Pohang Steelers finished 4th of 6) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. Defensively he reads as light defensive volume (1.66 tackles, blocks & interceptions per 90), with a bit more on the ball than most in the role. Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.5× and falling).

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

Per 90 & availability

Minutes played %39.4%

Available fixtures32 of 38

Goals / 900

Assists / 900.158

Goal contribution / 900.158

Defensive actions / 901.664

Player flow

Goal involvements2

Shot conversion %0

Shot accuracy %37.5

Pass accuracy %42

Dribble success %50

Cards / 900.079

Foul involvement / 901.109

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 (~5), then tapers with age. At 37, Sung-Yueng sits on 1.3, past its peak and easing. The blue line is Sung-Yueng's projected Rating — 7.8 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.