Domestic-league season · Fortuna Düsseldorf.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 DFB Pokal | 2 | 0 | 0 | 180 | 6.5 |
Kastenmeier's current-season form is down 65% on last season (Season 23→8), while his Rating eased 57→43. His peak season for form remains 2020/21 (Season 42).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Fortuna Düsseldorf · 17th | 32 | 0 | 1 | 7.28 | 43 | 8 |
| 2024/25 | Fortuna Düsseldorf · 6th | 34 | 0 | 0 | 7.34 | 57 | 23 |
| 2023/24 | Fortuna Düsseldorf · 3rd | 33 | 0 | 0 | 7.21 | 62 | 29 |
| 2022/23 | Fortuna Düsseldorf · 4th | 32 | 0 | 0 | 6.95 | 66 | 20 |
| 2021/22 | Fortuna Düsseldorf · 10th | 28 | 0 | 0 | 6.94 | 62 | 10 |
| 2020/21 | Fortuna Düsseldorf · 5th | 33 | 0 | 0 | 6.94 | 68 | 42 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
F. Kastenmeier is a 29-year-old goalkeeper at Fortuna Düsseldorf, rated 42.5 overall by Field Insider's model, ranking 219th of 320 in the 2. Bundesliga. An experienced operator, he has been an ever-present this season (94.1% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kastenmeier.
Judged on this season alone, Kastenmeier graded 8 — a workmanlike campaign that ranks 14th of 21 of the 21 goalkeepers in the 2. Bundesliga, on 5 clean sheets across 32 appearances.
Year-on-year, that's a drop on last season (Season 23 → 8). Over the 6 seasons on record his form has drifted down, peaking in 2020/21.
On long-term talent our Rating reads 43, 17th of 21 of the 21 goalkeepers in the 2. Bundesliga. At 29 Kastenmeier is in his prime years, and a market index of 8.9 reflects that trajectory.
Past his 2020/21 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
5 clean sheets in 32 appearances (16% of games). Keeping that many behind a relegation-threatened side (17th of 18) — a side that concedes more — points to a busy, productive season between the posts.
With a Rating of 42.5, Kastenmeier carries the 17th-highest potential of the goalkeepers in the 2. Bundesliga of 21, and he is posting that for a relegation-threatened side (Fortuna Düsseldorf finished 17th of 18) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. A near ever-present keeper carrying the gloves this season. Experienced and reliable, but the value curve is easing (1.1× now → 0.8× projected in three years).
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 (~16), then tapers with age. At 29, Kastenmeier sits on 8.9, past its peak and easing. The blue line is Kastenmeier's projected Rating — 42.5 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.
