Frank
Feller
GKGermany · 1.FC Heidenheim 1846
Player dossierBundesliga
FrankFeller
GKGoalkeeperGoalkeeper
- Club
- 1.FC Heidenheim 1846
- League
- Bundesliga
- Nationality
- Germany
- Age
- 22
- Height
- 183 cm
- Foot
- Right
- Valued
- 27 May 2026
Reading the valuation
The market values Feller at €800k. Model A, which never saw Feller during training, estimates €1.3M: the market value is 36% below that estimate.
That is a factor of ×1.57. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.
Without league and club, Model B estimates €1.3M, further from the market. Model B is usually further off (typical miss ×2.07): league and club explain much of how the market prices players.
A gap describes the model's arithmetic for this player's inputs, not what the player is worth.
- Apps
- 7
- Minutes
- 570
- Started
- 6/7
- Min / app
- 81
- Cards
- 0Y 0R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Feller…
SHAP describes the model's arithmetic for this player's inputs, not what causes market value. Model B can be explained only by the live service; Model A also has a published explanation for the research players.
Model A vs Model B against the observed €800k
Checking APIAsking the prediction API…
Held-out estimates come from cross-validation, with this player outside the training data: the honest comparison. Served models were refitted on every player, this one included, so they sit closer to the market. Shaded band: Model A's typical miss (×1.50 either way).
Player traitspercentiles vs 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
16% this player0% goalkeeper median80th percentile
No passing, progression or defensive actions exist in the dataset, so no trait claims to measure them.
Valuation history every Transfermarkt valuation on record
- First valuation
- €200k
- May 2024
- Peak
- €800k
- May 2026
- Model target
- €800k
- May 2026
- Valuations
- 7
- 0 club changes
May 2026: €800k, 1.FC Heidenheim 1846. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2024-05-29 | €200k | 1.FC Heidenheim 1846 |
| 2024-10-09 | €350k | 1.FC Heidenheim 1846 |
| 2024-12-20 | €350k | 1.FC Heidenheim 1846 |
| 2025-03-27 | €500k | 1.FC Heidenheim 1846 |
| 2025-06-05 | €500k | 1.FC Heidenheim 1846 |
| 2025-12-19 | €500k | 1.FC Heidenheim 1846 |
| 2026-05-27 | €800k | 1.FC Heidenheim 1846 |
Audit context group-level, not about this player
- Audit group
- UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- −0.451
The group comes from first-listed citizenship and is never a model input. Across the population, non-UEFA players' market values sit about 10% above Model A's held-out estimates, relative to UEFA players in the same leagues. One player's residual says nothing about that pattern (typical miss ×1.50), and none of it is evidence of discrimination: the target may itself be biased. Open the Fairness Audit
In context observed value among comparable players in this build
All players in the Terminal →Bundesliga451 players · median €5M
Valued above 5% of the 451 Bundesliga players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 39% of the 485 goalkeepers.
See them in the Explorer →Where Feller appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- WidmerRB1.FSV Mainz 05 · Bundesliga€800k
- DzwigalaCBFC St. Pauli · Bundesliga€800k
- OmlinGKBayer 04 Leverkusen · Bundesliga€800k
- PedersenLBFC Augsburg · Bundesliga€800k
- SzczesnyGKFC Barcelona · goalkeepers€800k
- NylandGKSevilla FC · goalkeepers€800k
- LunevGKDynamo Moscow · goalkeepers€800k
- LecomteGKFulham FC · goalkeepers€800k
Counts and ranks of observed Transfermarkt values only; model errors are never ranked here. Full player export: Every player in the modelling population (D-011).