Domestic-league season · FSV Mainz 05.
Missed 5 of FSV Mainz 05's ~34 games this season through 5 injury absences (toe, thigh). He still appeared 28 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.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Bundesliga | 28 | 4 | 2 | 2198 | 6.68 |
 UEFA Europa Conference League | 8 | 2 | 2 | 513 | 7.02 |
 Friendliesat South Korea | 4 | 0 | 1 | 197 | 6.68 |
 DFB Pokal | 2 | 0 | 0 | 76 | 6.4 |
Jae-Sung's current-season form is down 34% on last season (Season 47→31), while his Rating eased 47→32. His peak season for form remains 2024/25 (Season 47).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | FSV Mainz 05 · 10th | 28 | 4 | 2 | 6.68 | 32 | 31 |
| 2024/25 | FSV Mainz 05 · 6th | 33 | 7 | 6 | 7.16 | 47 | 47 |
| 2023/24 | FSV Mainz 05 · 13th | 29 | 6 | 3 | 7.03 | 47 | 35 |
| 2022/23 | FSV Mainz 05 · 9th | 34 | 7 | 4 | 6.96 | 53 | 39 |
| 2021/22 | FSV Mainz 05 · 8th | 27 | 4 | 3 | 6.87 | 56 | 26 |
| 2020/21 | Holstein Kiel · 3rd | 33 | 5 | 2 | 7.06 | 58 | 36 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
Lee Jae-Sung is a 33-year-old centre-forward at FSV Mainz 05, rated 32.1 overall by Field Insider's model, ranking 297th of 325 in the Bundesliga. A seasoned veteran, he has been an ever-present this season (84.2% of available minutes). He brings 0.25 goal contributions per 90 (0.16 goals, 0.08 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Jae-Sung.
Judged on this season alone, Jae-Sung graded 31 — a workmanlike campaign that ranks 22nd of 36 of the 36 centre-forwards in the Bundesliga, on 4 goals and 2 assists in 28 appearances (0.246 involvements per 90).
Year-on-year, that's a drop on last season (Season 47 → 31). Over the 6 seasons on record his form has drifted down, peaking in 2024/25.
On long-term talent our Rating reads 32, 32nd of 36 of the 36 centre-forwards in the Bundesliga. At 33 Jae-Sung is into the veteran stage, where the age curve weighs on the projection, and a market index of 18.7 reflects that trajectory.
Read the appearance count in context: Jae-Sung missed 5 games through injury (toe, thigh) out of roughly 34 this season. The 28 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.
Past his 2024/25 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
4 goals in 28 appearances (0.14 per game) — light end product the role wants to see climb. Add 2 assists for 6 goal contributions in all.
With a Rating of 32.1, Jae-Sung carries the 32nd-highest potential of the centre-forwards in the Bundesliga of 36. In the final third he profiles as a work-in-progress on end product (0.25 goal contributions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.7× and falling).
Generated from Field Insider's rating model · AI-written analysis to follow.
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 (~53), then tapers with age. At 33, Jae-Sung sits on 18.7, past its peak and easing. The blue line is Jae-Sung's projected Rating — 32.1 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.
€1M total transfer fees · 2 moves
No transfer news found for this player.
