FairValue

Checking model

Esc

  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
  • EnvironmentTerminalExplore, compare and track players; market, league and model views.
  • EnvironmentStoriesValuations, head-to-heads and research findings, told as stories.
  • TerminalPlayer ExplorerSearch, filter and sort the player export.
  • TerminalComparison StudioTwo to four players on one scale.
  • TerminalWatchlistsNamed collections, kept in this browser.
  • TerminalMarket LandscapeHow observed value is distributed, and where the model drifts.

↑ ↓ to move · Enter to open · Esc to closeLoading player index…

Portrait of Bilal Nadir

Bilal

Nadir

CMMorocco · Olympique Marseille

№ 659520Established €4M +0.69

Image: FootyLogos

Player dossierLigue 1

BilalNadir

CMCentral MidfieldMidfield

Club
Olympique Marseille
League
Ligue 1
Nationality
Morocco
Age
22
Height
179 cm
Foot
Left
Valued
1 Jun 2026

Reading the valuation

The market values Nadir at €8M. Model A, which never saw Nadir during training, estimates €4M: the market value is 99% above that estimate.

That is a factor of ×1.99. 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 €2.1M, 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.

▲ +0.69A €4M▲ +1.32B €2.1M
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
39
Minutes
1,059
Goals
1
Assists
4
Started
11/39
Min / app
27
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 Nadir…

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 €8M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €8MModel A €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 1,687 midfielders

Bilal Nadir's percentiles among midfielders: Goals per 90 50th, Assists per 90 97th, Minutes, two years 15th, Starts 5th, Minutes, last 365 days 19th, European club minutes 70th50thGoals97thAssists15thMinutes5thStarts19thRecent70thEurope

Dashed ring: the midfielder median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.34 this player0.09 midfielder median97th 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
Aug 2021
Peak
€9M
Oct 2025
Model target
€8M
Jun 2026
Valuations
13
1 club change
Jun 2026€8MOlympique MarseilleValuation the model is trained to reproduce

Jun 2026: €8M, Olympique Marseille. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2021-08-06€100kOlympique de Marseille B
2021-12-16€150kOlympique de Marseille B
2022-05-30€150kOlympique de Marseille B
2023-10-16€250kOlympique Marseille
2023-12-18€250kOlympique Marseille
2024-03-19€500kOlympique Marseille
2024-06-03€500kOlympique Marseille
2024-12-10€500kOlympique Marseille
2025-03-24€5MOlympique Marseille
2025-06-03€5MOlympique Marseille
2025-10-10€9MOlympique Marseille
2025-12-15€9MOlympique Marseille
2026-06-01€8MOlympique Marseille

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
+0.688

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 59% of the 423 Ligue 1 players.

€100k€750k€5M€30M€8MSee them in the Explorer →

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

Valued above 74% of the 1,687 midfielders.

€20k€200k€2M€20M€8MSee them in the Explorer →

Where Nadir 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).