Deniz
Dönmezer
GKTürkiye · Kayserispor
Player dossierSüper Lig
DenizDönmezer
GKGoalkeeperGoalkeeper
- Club
- Kayserispor
- League
- Süper Lig
- Nationality
- Türkiye
- Age
- 17
- Height
- 195 cm
- Foot
- Right
- Valued
- 21 May 2026
Reading the valuation
The market values Dönmezer at €1M. Model A, which never saw Dönmezer during training, estimates €1M: the market value is 1% below that estimate.
That is a factor of ×1.01. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.
Without league and club, Model B estimates €1.7M, 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
- 20
- Minutes
- 1,664
- Started
- 20/20
- Min / app
- 83
- Cards
- 1Y 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 Dönmezer…
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 €1M
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)
Starts
Share of appearances started rather than entered from the bench.
100% this player100% goalkeeper median62nd 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
- €300k
- Oct 2024
- Peak
- €1M
- Jun 2025
- Model target
- €1M
- May 2026
- Valuations
- 6
- 1 club change
May 2026: €1M, Kayserispor. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2024-10-04 | €300k | Adana Demirspor |
| 2024-12-23 | €300k | Adana Demirspor |
| 2025-03-20 | €800k | Adana Demirspor |
| 2025-06-18 | €1M | Adana Demirspor |
| 2025-12-17 | €1M | Kayserispor |
| 2026-05-21 | €1M | Kayserispor |
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
- −0.010
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 →Süper Lig428 players · median €1.2M
Valued above 40% of the 428 Süper Lig players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 48% of the 485 goalkeepers.
See them in the Explorer →Where Dönmezer appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- DemirbayCMKasimpasa · Süper Lig€1M
- DzhikiyaCBAntalyaspor · Süper Lig€1M
- BrenetRBKayserispor · Süper Lig€1M
- KılınçLWSamsunspor · Süper Lig€1M
- AkinfeevGKCSKA Moscow · goalkeepers€1M
- MignoletGKClub Brugge KV · goalkeepers€1M
- UnnerstallGKFC Twente Enschede · goalkeepers€1M
- GulácsiGKRB Leipzig · goalkeepers€1M
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).