FairValue

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Jeroen

Zoet

GKNetherlands · AZ Alkmaar

№ 79045Emerging €253k −0.01

Player dossierEredivisie

JeroenZoet

GKGoalkeeperGoalkeeper

Club
AZ Alkmaar
League
Eredivisie
Nationality
Netherlands
Age
35
Height
189 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Zoet at €250k. Model A, which never saw Zoet during training, estimates €253k: 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 €365k, 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 €253k▼ −0.38B €365k
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
22
Minutes
1,908
Started
21/22
Min / app
87
Cards
0Y 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 Zoet…

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 €250k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €250kModel A €253k

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 485 goalkeepers

Jeroen Zoet's percentiles among goalkeepers: Minutes, two years 37th, Starts 14th, Minutes, last 365 days 44th, European club minutes 88th37thMinutes14thStarts44thRecent88thEurope

Dashed ring: the goalkeeper median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

24% this player0% goalkeeper median88th percentile

0%peer deciles · median line · this player ●86%

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
Jul 2008
Peak
€12.5M
Dec 2018
Model target
€250k
May 2026
Valuations
40
6 club changes
May 2026€250kAZ AlkmaarValuation the model is trained to reproduce

May 2026: €250k, AZ Alkmaar. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2008-07-18€50kPSV Eindhoven U21
2009-05-25€100kPSV Eindhoven
2010-08-01€250kPSV Eindhoven
2011-10-21€500kRKC Waalwijk
2012-01-20€900kRKC Waalwijk
2012-07-13€1.5MRKC Waalwijk
2013-01-14€2MRKC Waalwijk
2013-06-17€2MRKC Waalwijk
2013-09-26€4MPSV Eindhoven
2014-02-11€5MPSV Eindhoven
2014-08-11€5MPSV Eindhoven
2015-02-16€5MPSV Eindhoven
2015-07-01€5MPSV Eindhoven
2015-11-11€5.5MPSV Eindhoven
2016-02-05€6MPSV Eindhoven
2016-04-08€7.5MPSV Eindhoven
2016-07-15€8.5MPSV Eindhoven
2017-01-18€9MPSV Eindhoven
2017-06-07€8.5MPSV Eindhoven
2018-01-17€9.5MPSV Eindhoven
2018-06-12€10MPSV Eindhoven
2018-12-28€12.5MPSV Eindhoven
2019-06-12€12MPSV Eindhoven
2019-12-18€8MPSV Eindhoven
2020-03-12€7MFC Utrecht
2020-04-08€5.5MFC Utrecht
2020-10-29€5MSpezia Calcio
2020-12-29€3.5MSpezia Calcio
2021-03-23€2.5MSpezia Calcio
2021-06-03€2MSpezia Calcio
2021-12-28€1.2MSpezia Calcio
2022-06-07€850kSpezia Calcio
2022-11-11€500kSpezia Calcio
2023-06-15€400kSpezia Calcio
2023-12-27€400kSpezia Calcio
2024-06-03€400kSpezia Calcio
2024-12-17€400kAZ Alkmaar
2025-05-28€300kAZ Alkmaar
2025-12-02€300kAZ Alkmaar
2026-05-28€250kAZ Alkmaar

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
−0.014

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 →

Eredivisie425 players · median €1M

Valued above 5% of the 425 Eredivisie players.

€75k€500k€3M€20M€250kSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 13% of the 485 goalkeepers.

€20k€200k€2M€20M€250kSee them in the Explorer →

Where Zoet 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).