FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Vinícius

Tobias

RBBrazil · Shakhtar Donetsk

№ 743587Established €4.9M +0.20

Player dossierPremier Liha

ViníciusTobias

RBRight-BackDefender

Club
Shakhtar Donetsk
League
Premier Liha
Nationality
Brazil
Age
22
Height
177 cm
Foot
Right
Valued
2 Jun 2026

Reading the valuation

The market values Tobias at €6M. Model A, which never saw Tobias during training, estimates €4.9M: the market value is 22% above that estimate.

That is a factor of ×1.22. 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 €9.3M, 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.

▲ +0.20A €4.9M▼ −0.43B €9.3M
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
54
Minutes
3,710
Goals
2
Assists
8
Started
39/54
Min / app
69
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 Tobias…

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 €6M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €6MModel A €4.9M

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

Vinícius Tobias's percentiles among defenders: Goals per 90 63rd, Assists per 90 94th, Minutes, two years 65th, Starts 30th, Minutes, last 365 days 47th, European club minutes 85th63rdGoals94thAssists65thMinutes30thStarts47thRecent85thEurope

Dashed ring: the defender median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.19 this player0.04 defender median94th percentile

0.00peer deciles · median line · this player ●0.58

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
€3M
Oct 2021
Peak
€6M
Dec 2025
Model target
€6M
Jun 2026
Valuations
10
2 club changes
Jun 2026€6MShakhtar DonetskValuation the model is trained to reproduce

Jun 2026: €6M, Shakhtar Donetsk. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2021-10-20€3MSport Club Internacional
2022-06-29€3MReal Madrid Castilla
2022-12-29€3MReal Madrid Castilla
2023-06-30€3MReal Madrid Castilla
2023-12-20€3MReal Madrid Castilla
2024-06-24€3MReal Madrid Castilla
2024-12-17€3MShakhtar Donetsk
2025-06-10€5MShakhtar Donetsk
2025-12-18€6MShakhtar Donetsk
2026-06-02€6MShakhtar Donetsk

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
+0.196

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 Liha414 players · median €400k

Valued above 95% of the 414 Premier Liha players.

€50k€200k€1M€5M€6MSee them in the Explorer →

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

Valued above 73% of the 2,065 defenders.

€20k€200k€2M€20M€6MSee them in the Explorer →

Where Tobias 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).