FairValue

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

Chevalier

GKFrance · Paris Saint-Germain

№ 463600Elite €23.5M +0.06

Player dossierLigue 1

LucasChevalier

GKGoalkeeperGoalkeeper

Club
Paris Saint-Germain
League
Ligue 1
Nationality
France
Age
24
Height
189 cm
Foot
Right
Valued
1 Jun 2026

Reading the valuation

The market values Chevalier at €25M. Model A, which never saw Chevalier during training, estimates €23.5M: the market value is 6% above that estimate.

That is a factor of ×1.06. 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 €13.5M, 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.

▲ +0.06A €23.5M▲ +0.62B €13.5M
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
73
Minutes
6,600
Started
73/73
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 Chevalier…

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 €25M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €25MModel A €23.5M

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

Lucas Chevalier's percentiles among goalkeepers: Minutes, two years 90th, Starts 62nd, Minutes, last 365 days 63rd, European club minutes 93rd90thMinutes62ndStarts63rdRecent93rdEurope

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
€300k
Aug 2020
Peak
€40M
Oct 2025
Model target
€25M
Jun 2026
Valuations
20
3 club changes
Jun 2026€25MParis Saint-GermainValuation the model is trained to reproduce

Jun 2026: €25M, Paris Saint-Germain. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2020-08-03€300kLOSC Lille
2020-10-15€300kLOSC Lille
2021-01-07€500kLOSC Lille
2021-06-04€500kLOSC Lille
2021-10-27€800kValenciennes FC
2021-12-27€1.2MValenciennes FC
2022-03-24€2MValenciennes FC
2022-06-02€2.5MValenciennes FC
2022-11-02€5MLOSC Lille
2023-03-27€10MLOSC Lille
2023-06-27€10MLOSC Lille
2023-12-18€18MLOSC Lille
2024-03-19€22MLOSC Lille
2024-06-03€25MLOSC Lille
2024-12-10€30MLOSC Lille
2025-06-03€30MLOSC Lille
2025-10-10€40MParis Saint-Germain
2025-12-15€35MParis Saint-Germain
2026-03-27€30MParis Saint-Germain
2026-06-01€25MParis Saint-Germain

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
+0.060

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 89% of the 423 Ligue 1 players.

€100k€750k€5M€30M€25MSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 96% of the 485 goalkeepers.

€20k€200k€2M€20M€25MSee them in the Explorer →

Where Chevalier 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).