FairValue

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  • 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.

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Portrait of Samir El Mourabet

Samir El

Mourabet

CMMorocco · RC Strasbourg Alsace

№ 1130514Elite €16.4M +0.29

Photo: Bryan Berlin / WikiPortraits, CC BY-SA 4.0 (background removed)

Player dossierLigue 1

Samir ElMourabet

CMCentral MidfieldMidfield

Club
RC Strasbourg Alsace
League
Ligue 1
Nationality
Morocco
Age
20
Height
187 cm
Foot
Left
Valued
1 Jun 2026

Reading the valuation

The market values Mourabet at €22M. Model A, which never saw Mourabet during training, estimates €16.4M: the market value is 34% above that estimate.

That is a factor of ×1.34. 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 €6.6M, 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.

▲ +0.29A €16.4M▲ +1.20B €6.6M
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
33
Minutes
2,137
Goals
1
Assists
3
Started
25/33
Min / app
65
Cards
4Y 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 Mourabet…

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 €22M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €22MModel A €16.4M

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

Samir El Mourabet's percentiles among midfielders: Goals per 90 30th, Assists per 90 63rd, Minutes, two years 40th, Starts 63rd, Minutes, last 365 days 69th, European club minutes 30th30thGoals63rdAssists40thMinutes63rdStarts69thRecent30thEurope

Dashed ring: the midfielder median (50th percentile)

Minutes, last 365 days

Club minutes in the final year of the window: recent involvement, or the absence of it.

2,137 this player1,541 midfielder median69th percentile

0peer deciles · median line · this player ●4,800

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
Jun 2025
Peak
€22M
Jun 2026
Model target
€22M
Jun 2026
Valuations
5
1 club change
Jun 2026€22MRC Strasbourg AlsaceValuation the model is trained to reproduce

Jun 2026: €22M, RC Strasbourg Alsace. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2025-06-03€50kRacing Strasbourg B
2025-10-10€2MRC Strasbourg Alsace
2025-12-15€8MRC Strasbourg Alsace
2026-03-27€18MRC Strasbourg Alsace
2026-06-01€22MRC Strasbourg Alsace

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
+0.294

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 88% of the 423 Ligue 1 players.

€100k€750k€5M€30M€22MSee them in the Explorer →

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

Valued above 90% of the 1,687 midfielders.

€20k€200k€2M€20M€22MSee them in the Explorer →

Where Mourabet 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).