FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Bas Van den

Eynden

CBBelgium · Beerschot VA

№ 621195Emerging €694k +0.01

Player dossierPro League

Bas Van denEynden

CBCentre-BackDefender

Club
Beerschot VA
League
Pro League
Nationality
Belgium
Age
23
Height
190 cm
Foot
Right
Valued
18 Dec 2025

Reading the valuation

The market values Eynden at €700k. Model A, which never saw Eynden during training, estimates €694k: the market value is 1% above 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 €1.3M, 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.

▲ +0.01A €694k▼ −0.63B €1.3M
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
9
Minutes
724
Goals
3
Assists
0
Started
8/9
Min / app
80
Cards
2Y 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 Eynden…

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 €700k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €700kModel A €694k

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 2,065 defenders

Bas Van den Eynden's percentiles among defenders: Goals per 90 100th, Assists per 90 17th, Minutes, two years 6th, Starts 66th, Minutes, last 365 days 3rd, European club minutes 30th100thGoals17thAssists6thMinutes66thStarts3rdRecent30thEurope

Dashed ring: the defender median (50th percentile)

Goals per 90

Club goals per 90 minutes played in the two years to the valuation date.

0.37 this player0.03 defender median100th percentile

0.00peer deciles · median line · this player ●0.41

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
Aug 2020
Peak
€700k
Dec 2024
Model target
€700k
Dec 2025
Valuations
13
2 club changes
Dec 2025€700kBeerschot VAValuation the model is trained to reproduce

Dec 2025: €700k, Beerschot VA. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2020-08-01€100kKV Mechelen U21
2021-10-06€100kKV Mechelen
2022-01-06€100kKV Mechelen
2022-04-12€100kKV Mechelen
2022-05-26€200kKV Mechelen
2022-11-04€150kKV Mechelen
2023-06-09€100kKV Mechelen
2023-12-19€100kKV Mechelen
2024-06-04€100kKV Mechelen
2024-10-02€500kKV Mechelen
2024-12-11€700kKV Mechelen
2025-06-12€700kKV Mechelen
2025-12-18€700kBeerschot VA

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
+0.009

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 →

Pro League350 players · median €1.8M

Valued above 19% of the 350 Pro League players.

€100k€750k€5M€30M€700kSee them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 26% of the 2,065 defenders.

€20k€200k€2M€20M€700kSee them in the Explorer →

Where Eynden 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).