FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Orkun

Kökçü

CMTürkiye · Besiktas JK

№ 454567Elite €29.1M −0.15

Player dossierSüper Lig

OrkunKökçü

CMCentral MidfieldMidfield

Club
Besiktas JK
League
Süper Lig
Nationality
Türkiye
Age
25
Height
175 cm
Foot
Both
Valued
21 May 2026

Reading the valuation

The market values Kökçü at €25M. Model A, which never saw Kökçü during training, estimates €29.1M: the market value is 14% below that estimate.

That is a factor of ×1.16. 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 €49.1M, 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.

▼ −0.15A €29.1M▼ −0.68B €49.1M
Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).
Apps
87
Minutes
6,920
Goals
19
Assists
20
Started
80/87
Min / app
80
Cards
18Y 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 Kökçü…

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 €25M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €25MModel A €29.1M

Asking 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 1,687 midfielders

Orkun Kökçü's percentiles among midfielders: Goals per 90 89th, Assists per 90 93rd, Minutes, two years 98th, Starts 89th, Minutes, last 365 days 93rd, European club minutes 89th89thGoals93rdAssists98thMinutes89thStarts93rdRecent89thEurope

Dashed ring: the midfielder median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

6,920 this player2,607 midfielder median98th percentile

451peer deciles · median line · this player ●9,624

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
€1M
Dec 2018
Peak
€35M
Jun 2023
Model target
€25M
May 2026
Valuations
25
2 club changes
May 2026€25MBesiktas JKValuation the model is trained to reproduce

May 2026: €25M, Besiktas JK. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2018-12-28€1MFeyenoord Rotterdam
2019-06-12€3MFeyenoord Rotterdam
2019-09-19€7MFeyenoord Rotterdam
2019-12-18€7MFeyenoord Rotterdam
2020-03-12€14MFeyenoord Rotterdam
2020-04-08€12.5MFeyenoord Rotterdam
2020-08-12€17.5MFeyenoord Rotterdam
2020-10-14€15MFeyenoord Rotterdam
2021-01-06€13MFeyenoord Rotterdam
2021-03-09€12MFeyenoord Rotterdam
2021-05-25€12MFeyenoord Rotterdam
2022-01-05€14MFeyenoord Rotterdam
2022-03-17€17MFeyenoord Rotterdam
2022-06-08€22MFeyenoord Rotterdam
2022-11-11€27MFeyenoord Rotterdam
2023-03-17€30MFeyenoord Rotterdam
2023-06-23€35MFeyenoord Rotterdam
2023-12-27€30MSL Benfica
2024-06-06€27MSL Benfica
2024-10-08€28MSL Benfica
2024-12-19€28MSL Benfica
2025-05-30€30MSL Benfica
2025-10-01€28MBesiktas JK
2025-12-17€25MBesiktas JK
2026-05-21€25MBesiktas 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
−0.151

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

5th highest observed value among 428 Süper Lig players.

€50k€300k€2M€15M€25MSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 91% of the 1,687 midfielders.

€20k€200k€2M€20M€25MSee them in the Explorer →

Where Kökçü appears

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

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).