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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Estêvão

RWBrazil · Chelsea FC

№ 1056993World Class €46.3M +0.55

Player dossierPremier League

Estêvão

RWRight WingerAttack

Club
Chelsea FC
League
Premier League
Nationality
Brazil
Age
19
Height
178 cm
Foot
Left
Valued
3 Jun 2026

Reading the valuation

The market values Estêvão at €80M. Model A, which never saw Estêvão during training, estimates €46.3M: the market value is 73% above that estimate.

That is a factor of ×1.73. 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 €12.6M, 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.

▲ +0.55A €46.3M▲ +1.85B €12.6M
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
41
Minutes
2,061
Goals
9
Assists
4
Started
25/41
Min / app
50
Cards
9Y 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 Estêvão…

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 €80M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €80MModel A €46.3M

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 1,583 attackers

Estêvão's percentiles among attackers: Goals per 90 75th, Assists per 90 60th, Minutes, two years 46th, Starts 53rd, Minutes, last 365 days 75th, European club minutes 98th75thGoals60thAssists46thMinutes53rdStarts75thRecent98thEurope

Dashed ring: the attacker median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

39% this player0% attacker median98th percentile

0%peer deciles · median line · this player ●100%

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
€10M
Dec 2023
Peak
€80M
Dec 2025
Model target
€80M
Jun 2026
Valuations
9
2 club changes
Jun 2026€80MChelsea FCValuation the model is trained to reproduce

Jun 2026: €80M, Chelsea FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2023-12-11€10MSE Palmeiras São Paulo U20
2024-03-28€10MSociedade Esportiva Palmeiras
2024-06-17€30MSociedade Esportiva Palmeiras
2024-09-27€40MSociedade Esportiva Palmeiras
2024-12-09€50MSociedade Esportiva Palmeiras
2025-03-28€55MSociedade Esportiva Palmeiras
2025-06-06€60MSociedade Esportiva Palmeiras
2025-12-09€80MChelsea FC
2026-06-03€80MChelsea FC

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
+0.547

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 97% of the 555 Premier League players.

€150k€1M€7.5M€50M€80MSee them in the Explorer →

Attackers, all leagues1,583 players · median €2.5M

Valued above 99% of the 1,583 attackers.

€20k€300k€5M€75M€80MSee them in the Explorer →

Where Estêvão 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).