Domestic-league season · 1. FC Köln.
Missed 6 of 1. FC Köln's ~34 games this season through 6 injury absences (muscle). He still appeared 26 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 | 26 | 3 | 1 | 1553 | 6.76 |
 UEFA U21 Championship - Qualificationat Germany U21 | 8 | 0 | 0 | 549 | — |
 UEFA U21 Championshipat Germany U21 | 5 | 0 | 0 | 106 | 6.6 |
 DFB Pokal | 1 | 0 | 0 | 33 | 6.3 |
Thielmann's current-season form is level with last season (Season 34→33), while his Rating climbed 68→74. His peak season for form remains 2024/25 (Season 34).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | 1. FC Köln · 14th | 26 | 3 | 1 | 6.76 | 74 | 33 |
| 2024/25 | 1. FC Köln · 1st | 33 | 2 | 3 | 6.9 | 68 | 34 |
| 2023/24 | 1. FC Köln · 17th | 22 | 1 | 0 | 6.75 | 71 | 20 |
| 2022/23 | 1. FC Köln · 11th | 23 | 2 | 2 | 6.65 | 76 | 15 |
| 2021/22 | 1. FC Köln · 7th | 29 | 3 | 3 | 6.77 | 81 | 21 |
| 2020/21 | 1. FC Köln · 16th | 24 | 2 | 4 | 6.55 | 75 | 18 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
J. Thielmann is a 24-year-old central midfielder at 1. FC Köln, rated 73.6 overall by Field Insider's model, ranking 103rd of 325 in the Bundesliga. An emerging talent, he has been a regular starter this season (61.6% of available minutes). His defensive output reads 2.09 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Thielmann.
Judged on this season alone, Thielmann graded 33 — a workmanlike campaign that ranks 19th of 35 of the 35 central midfielders in the Bundesliga, on 3 goals, 1 assist and 2.086 defensive actions per 90.
Year-on-year, that's broadly in line with last season (Season 34 → 33). Over the 6 seasons on record his form has trended upward, peaking in 2024/25.
On long-term talent our Rating reads 74, 16th of 35 of the 35 central midfielders in the Bundesliga. At 24 Thielmann is in his prime years, and a market index of 122.2 reflects that trajectory.
Read the appearance count in context: Thielmann missed 6 games through injury (muscle) out of roughly 34 this season. The 26 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.
Below his 2024/25 peak but holding a solid level — the platform for a return is there.
2.09 tackles, blocks & interceptions per 90 — moderate defensive volume, with 2 clean sheets across 26 appearances. Doing that for a lower-table side (14th of 18) 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 3 goals and 1 assist — a useful bonus from the back.
With a Rating of 73.6, Thielmann carries the 16th-highest potential of the central midfielders in the Bundesliga of 35, and he is posting that for a lower-table side (1. FC Köln finished 14th of 18) — 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 moderate defensive volume (2.09 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead. Doing it for a lesser side, he profiles as a value buy for a club higher up the table.
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 (~122), then tapers with age. At 24, Thielmann sits on 122.2, at or near its peak. The blue line is Thielmann's projected Rating — 73.6 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.
No transfer news found for this player.
