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 Enzo Le Fée

Enzo Le

Fée

CMFrance · Sunderland AFC

№ 633992Elite €31.8M −0.13

Image: FootyLogos

Player dossierPremier League

Enzo LeFée

CMCentral MidfieldMidfield

Club
Sunderland AFC
League
Premier League
Nationality
France
Age
26
Height
173 cm
Foot
Right
Valued
3 Jun 2026

Reading the valuation

The market values Fée at €28M. Model A, which never saw Fée during training, estimates €31.8M: the market value is 12% below that estimate.

That is a factor of ×1.14. 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 €10.8M, 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.

▼ −0.13A €31.8M▲ +0.95B €10.8M
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
50
Minutes
3,786
Goals
6
Assists
6
Started
43/50
Min / app
76
Cards
7Y 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 Fée…

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 €28M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €28MModel A €31.8M

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

Enzo Le Fée's percentiles among midfielders: Goals per 90 70th, Assists per 90 69th, Minutes, two years 71st, Starts 80th, Minutes, last 365 days 96th, European club minutes 62nd70thGoals69thAssists71stMinutes80thStarts96thRecent62ndEurope

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.

3,326 this player1,541 midfielder median96th 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
€600k
Sept 2019
Peak
€28M
Jun 2026
Model target
€28M
Jun 2026
Valuations
22
3 club changes
Jun 2026€28MSunderland AFCValuation the model is trained to reproduce

Jun 2026: €28M, Sunderland AFC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2019-09-30€600kFC Lorient
2020-01-06€1.8MFC Lorient
2020-04-08€1.6MFC Lorient
2020-08-14€3MFC Lorient
2020-10-15€4.5MFC Lorient
2021-01-07€5MFC Lorient
2021-06-04€5MFC Lorient
2021-12-16€5MFC Lorient
2022-05-30€6MFC Lorient
2022-09-19€9MFC Lorient
2022-11-02€12MFC Lorient
2023-03-27€15MFC Lorient
2023-06-27€20MFC Lorient
2023-12-18€20MStade Rennais FC
2024-06-03€18MStade Rennais FC
2024-10-18€20MAS Roma
2024-12-18€18MAS Roma
2025-05-27€18MSunderland AFC
2025-10-17€20MSunderland AFC
2025-12-09€20MSunderland AFC
2026-03-09€25MSunderland AFC
2026-06-03€28MSunderland AFC

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
−0.128

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 →

Premier League555 players · median €18M

Valued above 69% of the 555 Premier League players.

€150k€1M€7.5M€50M€28MSee them in the Explorer →

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

Valued above 93% of the 1,687 midfielders.

€20k€200k€2M€20M€28MSee them in the Explorer →

Where Fée 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).