FairValue

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Jeffrey de

Lange

GKNetherlands · Olympique Marseille

№ 315253Established €2.4M +0.03

Player dossierLigue 1

Jeffrey deLange

GKGoalkeeperGoalkeeper

Club
Olympique Marseille
League
Ligue 1
Nationality
Netherlands
Age
28
Height
190 cm
Foot
Right
Valued
1 Jun 2026

Reading the valuation

The market values Lange at €2.5M. Model A, which never saw Lange during training, estimates €2.4M: the market value is 3% above that estimate.

That is a factor of ×1.03. 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, 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.

▲ +0.03A €2.4M▲ +0.52B €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
7
Minutes
630
Started
7/7
Min / app
90
Cards
1Y 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 Lange…

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 €2.4M

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

Jeffrey de Lange's percentiles among goalkeepers: Minutes, two years 8th, Starts 62nd, Minutes, last 365 days 17th, European club minutes 93rd8thMinutes62ndStarts17thRecent93rdEurope

Dashed ring: the goalkeeper median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

29% this player0% goalkeeper median93rd 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
€25k
Oct 2015
Peak
€3M
May 2024
Model target
€2.5M
Jun 2026
Valuations
21
3 club changes
Jun 2026€2.5MOlympique MarseilleValuation the model is trained to reproduce

Jun 2026: €2.5M, Olympique Marseille. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2015-10-19€25kAjax Amsterdam U19
2017-06-21€50kAjax Amsterdam U19
2019-01-21€50kFC Twente Enschede
2019-07-03€50kFC Twente Enschede
2019-12-18€50kFC Twente Enschede
2020-10-14€50kFC Twente Enschede
2021-05-19€50kFC Twente Enschede
2022-01-05€50kFC Twente Enschede
2022-03-17€200kFC Twente Enschede
2022-06-08€200kFC Twente Enschede
2022-09-14€500kGo Ahead Eagles
2022-11-11€650kGo Ahead Eagles
2023-06-23€750kGo Ahead Eagles
2023-12-15€1.3MGo Ahead Eagles
2024-03-18€2MGo Ahead Eagles
2024-05-31€3MGo Ahead Eagles
2024-12-10€2.5MOlympique Marseille
2025-06-03€2MOlympique Marseille
2025-12-15€2MOlympique Marseille
2026-03-27€3MOlympique Marseille
2026-06-01€2.5MOlympique Marseille

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
+0.029

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 →

Ligue 1423 players · median €5M

Valued above 24% of the 423 Ligue 1 players.

€100k€750k€5M€30M€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 Lange 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).