FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Thiago Fernández

Thiago

Fernández

LWArgentina · Real Oviedo

№ 1127730Established €1.7M +0.95

Image: FootyLogos

Player dossierLaLiga

ThiagoFernández

LWLeft WingerAttack

Club
Real Oviedo
League
LaLiga
Nationality
Argentina
Age
22
Height
175 cm
Foot
Right
Valued
5 Jun 2026

Reading the valuation

The market values Fernández at €4.5M. Model A, which never saw Fernández during training, estimates €1.7M: the market value is 160% above that estimate.

That is a factor of ×2.60. 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 €1M, 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.

▲ +0.95A €1.7M▲ +1.49B €1M
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
16
Minutes
822
Goals
0
Assists
4
Started
9/16
Min / app
51
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 Fernández…

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 €4.5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €4.5MModel A €1.7M

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

Thiago Fernández's percentiles among attackers: Goals per 90 3rd, Assists per 90 98th, Minutes, two years 13th, Starts 46th, Minutes, last 365 days 30th, European club minutes 28th3rdGoals98thAssists13thMinutes46thStarts30thRecent28thEurope

Dashed ring: the attacker median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.44 this player0.15 attacker median98th percentile

0.00peer deciles · median line · this player ●0.73

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
€75k
Jul 2023
Peak
€7M
Dec 2024
Model target
€4.5M
Jun 2026
Valuations
9
1 club change
Jun 2026€4.5MReal OviedoValuation the model is trained to reproduce

Jun 2026: €4.5M, Real Oviedo. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2023-07-04€75kCA Vélez Sarsfield
2023-12-19€75kCA Vélez Sarsfield
2024-06-12€1.8MCA Vélez Sarsfield
2024-09-30€5MCA Vélez Sarsfield
2024-12-13€7MCA Vélez Sarsfield
2025-06-02€6.5MCA Vélez Sarsfield
2025-09-24€5MCA Vélez Sarsfield
2025-12-17€4.5MCA Vélez Sarsfield
2026-06-05€4.5MReal Oviedo

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
+0.954

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 →

LaLiga509 players · median €4M

Valued above 56% of the 509 LaLiga players.

€100k€1M€10M€100M€4.5MSee them in the Explorer →

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

Valued above 63% of the 1,583 attackers.

€20k€300k€5M€75M€4.5MSee them in the Explorer →

Where Fernández 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).