FairValue

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Etienne

Vaessen

GKSuriname · FC Groningen

№ 387197Established €1.2M +0.70

Player dossierEredivisie

EtienneVaessen

GKGoalkeeperGoalkeeper

Club
FC Groningen
League
Eredivisie
Nationality
Suriname
Age
30
Height
189 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Vaessen at €2.5M. Model A, which never saw Vaessen during training, estimates €1.2M: the market value is 102% above that estimate.

That is a factor of ×2.02. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.

Without league and club, Model B estimates €1.7M, 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.

▲ +0.70A €1.2M▲ +0.42B €1.7M
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
62
Minutes
5,478
Started
62/62
Min / app
88
Cards
6Y 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 Vaessen…

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 €2.5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €2.5MModel A €1.2M

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

Etienne Vaessen's percentiles among goalkeepers: Minutes, two years 81st, Starts 62nd, Minutes, last 365 days 69th, European club minutes 32nd81stMinutes62ndStarts69thRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Minutes, two years

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

5,478 this player2,790 goalkeeper median81st percentile

450peer deciles · median line · this player ●9,210

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
Jul 2015
Peak
€2.5M
Dec 2025
Model target
€2.5M
May 2026
Valuations
26
1 club change
May 2026€2.5MFC GroningenValuation the model is trained to reproduce

May 2026: €2.5M, FC Groningen. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2015-07-01€25kRKC Waalwijk
2016-02-05€25kRKC Waalwijk
2016-07-01€25kRKC Waalwijk
2016-12-26€50kRKC Waalwijk
2017-06-21€75kRKC Waalwijk
2018-03-01€125kRKC Waalwijk
2018-06-29€175kRKC Waalwijk
2019-01-21€225kRKC Waalwijk
2019-07-03€400kRKC Waalwijk
2019-12-18€450kRKC Waalwijk
2020-04-08€350kRKC Waalwijk
2020-10-14€350kRKC Waalwijk
2021-05-19€350kRKC Waalwijk
2022-01-05€450kRKC Waalwijk
2022-06-08€550kRKC Waalwijk
2022-09-14€650kRKC Waalwijk
2022-11-11€650kRKC Waalwijk
2023-03-17€800kRKC Waalwijk
2023-06-23€1MRKC Waalwijk
2023-12-15€1MRKC Waalwijk
2024-05-31€1.5MRKC Waalwijk
2024-12-17€1.5MFC Groningen
2025-03-28€2MFC Groningen
2025-05-28€2MFC Groningen
2025-12-02€2.5MFC Groningen
2026-05-28€2.5MFC Groningen

Audit context group-level, not about this player

Audit group
non-UEFA
Population gap, Model A
+0.093 95% CI +0.063 to +0.124
This player, market vs held-out A
+0.703

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 68% of the 425 Eredivisie players.

€75k€500k€3M€20M€2.5MSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 64% of the 485 goalkeepers.

€20k€200k€2M€20M€2.5MSee them in the Explorer →

Where Vaessen 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).