Burhan
Ersoy
CBTürkiye · Fatih Karagümrük
Player dossierSüper Lig
BurhanErsoy
CBCentre-BackDefender
- Club
- Fatih Karagümrük
- League
- Süper Lig
- Nationality
- Türkiye
- Age
- 22
- Height
- 187 cm
- Foot
- Right
- Valued
- 21 May 2026
Reading the valuation
The market values Ersoy at €100k. Model A, which never saw Ersoy during training, estimates €430k: the market value is 77% below that estimate.
That is a factor of ×4.30. 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 €750k, 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
- 971
- Goals
- 0
- Assists
- 0
- Started
- 13/20
- Min / app
- 49
- Cards
- 3Y 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 Ersoy…
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 €100k
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 2,065 defenders
Dashed ring: the defender median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
0% this player0% defender median30th 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
- €50k
- Jan 2024
- Peak
- €100k
- Jun 2025
- Model target
- €100k
- May 2026
- Valuations
- 9
- 1 club change
May 2026: €100k, Fatih Karagümrük. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2024-01-20 | €50k | Adana Demirspor |
| 2024-03-15 | €50k | Adana Demirspor |
| 2024-05-31 | €50k | Adana Demirspor |
| 2024-10-04 | €50k | Adana Demirspor |
| 2024-12-23 | €50k | Adana Demirspor |
| 2025-03-20 | €50k | Adana Demirspor |
| 2025-06-18 | €100k | Adana Demirspor |
| 2025-12-17 | €100k | Fatih Karagümrük |
| 2026-05-21 | €100k | Fatih Karagümrük |
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
- −1.458
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 1% of the 428 Süper Lig players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 1% of the 2,065 defenders.
See them in the Explorer →Where Ersoy appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- KaracaRWAlanyaspor · Süper Lig€100k
- AydoğduCMSamsunspor · Süper Lig€100k
- SarıCBAntalyaspor · Süper Lig€100k
- TaşkıranGKAlanyaspor · Süper Lig€100k
- FonteCBCasa Pia AC · defenders€100k
- NeustädterCBKVC Westerlo · defenders€100k
- DalsgaardRBAarhus GF · defenders€100k
- TanchykRBEpicentr Kamyanets-Podilskyi · defenders€100k
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).