FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Lautaro Martínez

Lautaro

Martínez

CFArgentina · Inter Milan

№ 406625World Class €60M +0.35

Photo: Bryan Berlin / WikiPortraits, CC BY-SA 4.0 (background removed)

Player dossierSerie A

LautaroMartínez

CFCentre-ForwardAttack

Club
Inter Milan
League
Serie A
Nationality
Argentina
Age
28
Height
174 cm
Foot
Right
Valued
29 May 2026

Reading the valuation

The market values Martínez at €85M. Model A, which never saw Martínez during training, estimates €60M: the market value is 42% above that estimate.

That is a factor of ×1.42. 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 €36.4M, 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.

▲ +0.35A €60M▲ +0.85B €36.4M
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
93
Minutes
6,766
Goals
45
Assists
13
Started
82/93
Min / app
73
Cards
10Y 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 Martínez…

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 €85M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €85MModel A €60M

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

Lautaro Martínez's percentiles among attackers: Goals per 90 95th, Assists per 90 60th, Minutes, two years 99th, Starts 92nd, Minutes, last 365 days 96th, European club minutes 89th95thGoals60thAssists99thMinutes92ndStarts96thRecent89thEurope

Dashed ring: the attacker median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

6,766 this player2,242 attacker median99th percentile

450peer deciles · median line · this player ●8,788

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
€100k
Feb 2016
Peak
€110M
Dec 2023
Model target
€85M
May 2026
Valuations
28
1 club change
May 2026€85MInter MilanValuation the model is trained to reproduce

May 2026: €85M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2016-02-06€100kRacing Club
2016-08-08€500kRacing Club
2017-02-13€2.5MRacing Club
2017-10-09€10MRacing Club
2018-05-08€25MRacing Club
2018-12-20€25MInter Milan
2019-06-06€30MInter Milan
2019-10-08€40MInter Milan
2019-12-12€80MInter Milan
2020-04-08€64MInter Milan
2020-08-25€70MInter Milan
2020-12-29€70MInter Milan
2021-06-03€80MInter Milan
2021-12-28€80MInter Milan
2022-03-15€70MInter Milan
2022-06-07€75MInter Milan
2022-11-11€75MInter Milan
2023-03-21€80MInter Milan
2023-06-15€85MInter Milan
2023-10-11€100MInter Milan
2023-12-20€110MInter Milan
2024-06-05€110MInter Milan
2024-12-18€100MInter Milan
2025-03-25€95MInter Milan
2025-06-17€95MInter Milan
2025-10-07€85MInter Milan
2025-12-23€85MInter Milan
2026-05-29€85MInter Milan

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
+0.348

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

The highest observed value among 507 Serie A players.

€100k€750k€5M€30M€85MSee them in the Explorer →

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

Valued above 99% of the 1,583 attackers.

€20k€300k€5M€75M€85MSee them in the Explorer →

Where Martínez 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).