Gökhan
Sazdağı
RBTürkiye · Besiktas JK
Player dossierSüper Lig
GökhanSazdağı
RBRight-BackDefender
- Club
- Besiktas JK
- League
- Süper Lig
- Nationality
- Türkiye
- Age
- 31
- Height
- 180 cm
- Foot
- Right
- Valued
- 21 May 2026
Reading the valuation
The market values Sazdağı at €1.2M. Model A, which never saw Sazdağı during training, estimates €1.2M: 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 €572k, 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
- 50
- Minutes
- 4,194
- Goals
- 0
- Assists
- 4
- Started
- 47/50
- Min / app
- 84
- Cards
- 15Y 1R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Sazdağı…
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 €1.2M
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)
Starts
Share of appearances started rather than entered from the bench.
94% this player83% defender median81st 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
- €25k
- Sept 2013
- Peak
- €1.5M
- Oct 2025
- Model target
- €1.2M
- May 2026
- Valuations
- 32
- 8 club changes
May 2026: €1.2M, Besiktas JK. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2013-09-24 | €25k | Turgutluspor |
| 2014-07-09 | €125k | Fenerbahce U21 |
| 2015-01-05 | €450k | Manisaspor |
| 2015-06-08 | €800k | Manisaspor |
| 2016-01-04 | €800k | Gaziantep Büyüksehir Belediyespor |
| 2016-07-14 | €800k | Gaziantep Büyüksehir Belediyespor |
| 2017-01-09 | €400k | Gaziantep Büyüksehir Belediyespor |
| 2017-06-30 | €400k | Gaziantep Büyüksehir Belediyespor |
| 2018-07-04 | €100k | Hatayspor |
| 2019-01-07 | €125k | Adanaspor |
| 2019-06-17 | €75k | Adanaspor |
| 2020-02-04 | €100k | Boluspor |
| 2020-08-27 | €225k | Boluspor |
| 2020-12-30 | €275k | Boluspor |
| 2021-10-12 | €325k | Kayserispor |
| 2022-01-04 | €375k | Kayserispor |
| 2022-03-31 | €425k | Kayserispor |
| 2022-06-01 | €450k | Kayserispor |
| 2022-10-27 | €400k | Kayserispor |
| 2023-03-14 | €750k | Kayserispor |
| 2023-06-08 | €750k | Kayserispor |
| 2023-09-27 | €750k | Kayserispor |
| 2023-12-21 | €900k | Kayserispor |
| 2024-03-15 | €1M | Kayserispor |
| 2024-05-31 | €1M | Kayserispor |
| 2024-10-04 | €900k | Kayserispor |
| 2024-12-23 | €1M | Kayserispor |
| 2025-03-20 | €1M | Kayserispor |
| 2025-06-18 | €1.2M | Kayserispor |
| 2025-10-01 | €1.5M | Besiktas JK |
| 2025-12-17 | €1.5M | Besiktas JK |
| 2026-05-21 | €1.2M | Besiktas JK |
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
- −0.012
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 45% of the 428 Süper Lig players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 39% of the 2,065 defenders.
See them in the Explorer →Where Sazdağı appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- YokuşluDMTrabzonspor · Süper Lig€1.2M
- ThiamCFEyüpspor · Süper Lig€1.2M
- StormLWAntalyaspor · Süper Lig€1.2M
- HajradinovicAMKasimpasa · Süper Lig€1.2M
- BlindCBGirona FC · defenders€1.2M
- CostaCB1.FSV Mainz 05 · defenders€1.2M
- AlonsoCBCelta de Vigo · defenders€1.2M
- LykogiannisLBBologna FC 1909 · defenders€1.2M
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).