FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Juan Cabal

Juan

Cabal

LBColombia · Juventus FC

№ 686965Established €4.8M +0.37

Close-up

Image: FootyLogos

Player dossierSerie A

JuanCabal

LBLeft-BackDefender

Club
Juventus FC
League
Serie A
Nationality
Colombia
Age
25
Height
186 cm
Foot
Left
Valued
29 May 2026

Reading the valuation

The market values Cabal at €7M. Model A, which never saw Cabal during training, estimates €4.8M: the market value is 45% above that estimate.

That is a factor of ×1.45. 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 €1.5M, 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.

▲ +0.37A €4.8M▲ +1.51B €1.5M
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
28
Minutes
1,132
Goals
2
Assists
2
Started
13/28
Min / app
40
Cards
5Y 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 Cabal…

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 €7M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €7MModel A €4.8M

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 2,065 defenders

Juan Cabal's percentiles among defenders: Goals per 90 96th, Assists per 90 90th, Minutes, two years 15th, Starts 5th, Minutes, last 365 days 12th, European club minutes 93rd96thGoals90thAssists15thMinutes5thStarts12thRecent93rdEurope

Dashed ring: the defender median (50th percentile)

Goals per 90

Club goals per 90 minutes played in the two years to the valuation date.

0.16 this player0.03 defender median96th percentile

0.00peer deciles · median line · this player ●0.41

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
€300k
Feb 2020
Peak
€9M
Oct 2024
Model target
€7M
May 2026
Valuations
16
3 club changes
May 2026€7MJuventus FCValuation the model is trained to reproduce

May 2026: €7M, Juventus FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2020-02-28€300kUnknown
2021-02-09€450kAtlético Nacional
2021-06-07€450kAtlético Nacional
2022-01-13€450kAtlético Nacional
2022-06-17€800kAtlético Nacional
2022-09-27€2.5MHellas Verona
2022-11-11€2.5MHellas Verona
2023-06-15€2.5MHellas Verona
2023-12-20€2MHellas Verona
2024-03-12€2.5MHellas Verona
2024-06-05€3.5MHellas Verona
2024-10-18€9MJuventus FC
2024-12-18€9MJuventus FC
2025-06-17€9MJuventus FC
2025-12-23€9MJuventus FC
2026-05-29€7MJuventus 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
+0.373

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 →

Serie A507 players · median €5.5M

Valued above 55% of the 507 Serie A players.

€100k€750k€5M€30M€7MSee them in the Explorer →

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

Valued above 76% of the 2,065 defenders.

€20k€200k€2M€20M€7MSee them in the Explorer →

Where Cabal 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).