Domestic-league season · Alemannia Aachen.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 3. Liga | 9 | 0 | 0 | 195 | 6.44 |
Heister's current-season form is down 91% on last season (Season 11→1), while his Rating eased 32→20. His peak season for form remains 2021/22 (Season 13).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Alemannia Aachen · 7th | 9 | 0 | 0 | 6.44 | 20 | 1 |
| 2024/25 | Alemannia Aachen · 12th | 21 | 0 | 3 | 6.82 | 32 | 11 |
| 2022/23 | FC Viktoria Köln · 9th | 12 | 0 | 0 | — | 33 | 0 |
| 2021/22 | FC Viktoria Köln · 13th | 26 | 0 | 0 | — | 40 | 13 |
| 2020/21 | SSV Jahn Regensburg · 14th | 10 | 0 | 0 | 6.5 | 49 | 3 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
F. Heister is a 29-year-old full-back at Alemannia Aachen, rated 20.3 overall by Field Insider's model. An experienced operator, he has been a fringe squad member this season (5.7% of available minutes). His defensive output reads 3.23 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Heister.
On the season, Heister graded 1 for current form (age-blind), on 0 clean sheets and 3.231 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 11 → 1). Over the 5 seasons on record his form has held fairly steady, peaking in 2021/22.
On long-term talent our Rating reads 20. At 29 Heister is in his prime years, and a market index of 5.8 reflects that trajectory.
Below his 2021/22 peak but holding a solid level — the platform for a return is there.
3.23 tackles, blocks & interceptions per 90 — moderate defensive volume across 9 appearances.
Rated 20.3 overall — below regular-starter level. Defensively he reads as moderate defensive volume (3.23 tackles, blocks & interceptions per 90). 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 (~11), then tapers with age. At 29, Heister sits on 5.8, past its peak and easing. The blue line is Heister's projected Rating — 20.3 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.
