Timon
Wellenreuther
GKGermany · Feyenoord Rotterdam
Player dossierEredivisie
TimonWellenreuther
GKGoalkeeperGoalkeeper
- Club
- Feyenoord Rotterdam
- League
- Eredivisie
- Nationality
- Germany
- Age
- 30
- Height
- 188 cm
- Foot
- Right
- Valued
- 28 May 2026
EredivisieReading the valuation
The market values Wellenreuther at €5M. Model A, which never saw Wellenreuther during training, estimates €9.5M: the market value is 48% below that estimate.
That is a factor of ×1.91. 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 €13.4M, 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
- 85
- Minutes
- 7,615
- Started
- 84/85
- Min / app
- 90
- Cards
- 10Y 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 Wellenreuther…
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 €5M
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)
Minutes, two years
Total club minutes in the two-year window: how much the player was used.
7,615 this player2,790 goalkeeper median97th 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
- €100k
- Jun 2014
- Peak
- €7M
- May 2024
- Model target
- €5M
- May 2026
- Valuations
- 32
- 7 club changes
May 2026: €5M, Feyenoord Rotterdam. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2014-06-30 | €100k | FC Schalke 04 U19 |
| 2015-02-04 | €100k | FC Schalke 04 |
| 2015-03-29 | €400k | FC Schalke 04 |
| 2015-07-01 | €400k | RCD Mallorca |
| 2015-11-20 | €700k | RCD Mallorca |
| 2016-02-22 | €700k | RCD Mallorca |
| 2016-07-22 | €700k | FC Schalke 04 |
| 2017-02-07 | €300k | FC Schalke 04 |
| 2017-06-19 | €300k | FC Schalke 04 |
| 2018-01-17 | €200k | Willem II Tilburg |
| 2018-06-12 | €250k | Willem II Tilburg |
| 2018-10-04 | €500k | Willem II Tilburg |
| 2018-12-28 | €750k | Willem II Tilburg |
| 2019-03-13 | €1M | Willem II Tilburg |
| 2019-06-12 | €1.3M | Willem II Tilburg |
| 2019-12-18 | €1.3M | Willem II Tilburg |
| 2020-04-08 | €1M | Willem II Tilburg |
| 2020-10-16 | €1.3M | RSC Anderlecht |
| 2021-06-07 | €1M | RSC Anderlecht |
| 2022-01-05 | €1M | Willem II Tilburg |
| 2022-06-08 | €800k | Willem II Tilburg |
| 2022-11-11 | €800k | Feyenoord Rotterdam |
| 2023-03-17 | €1M | Feyenoord Rotterdam |
| 2023-06-23 | €2M | Feyenoord Rotterdam |
| 2023-10-17 | €3M | Feyenoord Rotterdam |
| 2023-12-15 | €3M | Feyenoord Rotterdam |
| 2024-03-18 | €6M | Feyenoord Rotterdam |
| 2024-05-31 | €7M | Feyenoord Rotterdam |
| 2024-12-17 | €6M | Feyenoord Rotterdam |
| 2025-05-28 | €6M | Feyenoord Rotterdam |
| 2025-12-02 | €6M | Feyenoord Rotterdam |
| 2026-05-28 | €5M | Feyenoord Rotterdam |
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
- −0.645
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 →Eredivisie425 players · median €1M
Valued above 80% of the 425 Eredivisie players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 79% of the 485 goalkeepers.
See them in the Explorer →Where Wellenreuther appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- RosaRBAjax Amsterdam · Eredivisie€5M
- JarosGKAjax Amsterdam · Eredivisie€5M
- RegeerDMAjax Amsterdam · Eredivisie€5M
- MeerveldAMSC Heerenveen · Eredivisie€5M
- PopeGKNewcastle United · goalkeepers€5M
- ArrizabalagaGKArsenal FC · goalkeepers€5M
- BayındırGKManchester United · goalkeepers€5M
- CarevićGKFC Famalicão · goalkeepers€5M
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).