FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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  • TerminalMarket LandscapeHow observed value is distributed, and where the model drifts.

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Chico

Gonçalves

CBPortugal · CD Nacional

№ 1020652Emerging €482k −0.88

Player dossierLiga Portugal

ChicoGonçalves

CBCentre-BackDefender

Club
CD Nacional
League
Liga Portugal
Nationality
Portugal
Age
22
Height
188 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Gonçalves at €200k. Model A, which never saw Gonçalves during training, estimates €482k: the market value is 58% below that estimate.

That is a factor of ×2.41. 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 €560k, 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.

▼ −0.88A €482k▼ −1.03B €560k
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
11
Minutes
580
Goals
0
Assists
0
Started
6/11
Min / app
53
Cards
3Y 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 Gonçalves…

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 €200k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €200kModel A €482k

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 2,065 defenders

Chico Gonçalves's percentiles among defenders: Goals per 90 18th, Assists per 90 17th, Minutes, two years 3rd, Starts 11th, Minutes, last 365 days 14th, European club minutes 30th18thGoals17thAssists3rdMinutes11thStarts14thRecent30thEurope

Dashed ring: the defender median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

0% this player0% defender median30th percentile

0%peer deciles · median line · this player ●85%

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
€125k
Dec 2022
Peak
€300k
Jun 2024
Model target
€200k
May 2026
Valuations
8
1 club change
May 2026€200kCD NacionalValuation the model is trained to reproduce

May 2026: €200k, CD Nacional. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2022-12-28€125kCD Nacional U19
2023-06-28€125kCD Nacional U19
2023-12-14€275kCD Nacional
2024-06-20€300kCD Nacional
2024-12-19€300kCD Nacional
2025-05-30€200kCD Nacional
2025-12-18€200kCD Nacional
2026-05-28€200kCD Nacional

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
−0.879

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 →

Liga Portugal423 players · median €1M

Valued above 5% of the 423 Liga Portugal players.

€20k€200k€2M€20M€200kSee them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 5% of the 2,065 defenders.

€20k€200k€2M€20M€200kSee them in the Explorer →

Where Gonçalves 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).