FairValue

Checking model

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

Schrijvers

CMBelgium · Oud-Heverlee Leuven

№ 208552Emerging €1.6M −0.09

Player dossierPro League

SiebeSchrijvers

CMCentral MidfieldMidfield

Club
Oud-Heverlee Leuven
League
Pro League
Nationality
Belgium
Age
29
Height
179 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Schrijvers at €1.5M. Model A, which never saw Schrijvers during training, estimates €1.6M: the market value is 9% below that estimate.

That is a factor of ×1.10. 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 €1.5M, closer to the market here, although it is usually further off (typical miss ×2.07).

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▼ −0.09A €1.6M▼ −0.02B €1.5M
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
58
Minutes
3,942
Goals
7
Assists
8
Started
47/58
Min / app
68
Cards
11Y 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 Schrijvers…

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 €1.5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €1.5MModel A €1.6M

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

Siebe Schrijvers's percentiles among midfielders: Goals per 90 74th, Assists per 90 79th, Minutes, two years 73rd, Starts 72nd, Minutes, last 365 days 68th, European club minutes 30th74thGoals79thAssists73rdMinutes72ndStarts68thRecent30thEurope

Dashed ring: the midfielder median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.18 this player0.09 midfielder median79th percentile

0.00peer deciles · median line · this player ●0.74

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
Sept 2012
Peak
€7.5M
Jun 2019
Model target
€1.5M
Jun 2026
Valuations
33
4 club changes
Jun 2026€1.5MOud-Heverlee LeuvenValuation the model is trained to reproduce

Jun 2026: €1.5M, Oud-Heverlee Leuven. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2012-09-18€100kKRC Genk
2013-01-09€300kKRC Genk
2013-06-25€300kKRC Genk
2014-02-10€500kKRC Genk
2014-06-28€1MKRC Genk
2015-01-07€1.5MKRC Genk
2016-02-07€1.5MKVRS Waasland - SK Beveren
2016-07-15€1.5MKVRS Waasland - SK Beveren
2017-01-21€3MKRC Genk
2017-06-06€3.5MKRC Genk
2018-01-09€4MKRC Genk
2018-06-03€3.5MKRC Genk
2018-12-27€4MClub Brugge KV
2019-03-04€5MClub Brugge KV
2019-06-10€7.5MClub Brugge KV
2019-12-13€7MClub Brugge KV
2020-03-30€5MClub Brugge KV
2020-04-08€4MClub Brugge KV
2020-10-16€3.5MClub Brugge KV
2021-01-04€3MClub Brugge KV
2021-03-17€2.5MOud-Heverlee Leuven
2021-06-07€2.2MOud-Heverlee Leuven
2021-10-06€2MOud-Heverlee Leuven
2022-01-06€2MOud-Heverlee Leuven
2022-04-12€2MOud-Heverlee Leuven
2022-11-04€1.8MOud-Heverlee Leuven
2023-06-09€2MOud-Heverlee Leuven
2023-12-19€2MOud-Heverlee Leuven
2024-06-04€2MOud-Heverlee Leuven
2024-12-11€1.5MOud-Heverlee Leuven
2025-06-12€1.5MOud-Heverlee Leuven
2025-12-10€1.5MOud-Heverlee Leuven
2026-06-04€1.5MOud-Heverlee Leuven

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
−0.092

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 39% of the 350 Pro League players.

€100k€750k€5M€30M€1.5MSee them in the Explorer →

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

Valued above 39% of the 1,687 midfielders.

€20k€200k€2M€20M€1.5MSee them in the Explorer →

Where Schrijvers 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).