FairValue

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

Román

GKSpain · RCD Mallorca

№ 562742Established €6M 0.00

Player dossierLaLiga

LeoRomán

GKGoalkeeperGoalkeeper

Club
RCD Mallorca
League
LaLiga
Nationality
Spain
Age
25
Height
189 cm
Foot
Right
Valued
5 Jun 2026

Reading the valuation

The market values Román at €6M. Model A, which never saw Román during training, estimates €6M: the market value is level with that estimate.

That is a factor of ×1.00. 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 €4.9M, 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.

▼ 0.00A €6M▲ +0.20B €4.9M
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
41
Minutes
3,690
Started
41/41
Min / app
90
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 Román…

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 €6M

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 485 goalkeepers

Leo Román's percentiles among goalkeepers: Minutes, two years 65th, Starts 62nd, Minutes, last 365 days 78th, European club minutes 32nd65thMinutes62ndStarts78thRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Minutes, last 365 days

Club minutes in the final year of the window: recent involvement, or the absence of it.

2,970 this player1,560 goalkeeper median78th percentile

0peer deciles · median line · this player ●4,970

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
Nov 2019
Peak
€6M
Mar 2026
Model target
€6M
Jun 2026
Valuations
16
4 club changes
Jun 2026€6MRCD MallorcaValuation the model is trained to reproduce

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

Show as a table
DateMarket valueClub
2019-11-21€100kPenya Deportiva Santa Eulalia
2020-02-11€100kPenya Deportiva Santa Eulalia
2021-08-16€300kRCD Mallorca B
2021-12-30€300kRCD Mallorca B
2022-06-03€300kRCD Mallorca B
2022-11-07€300kRCD Mallorca
2023-06-13€300kRCD Mallorca
2023-10-13€500kReal Oviedo
2023-12-20€1MReal Oviedo
2024-03-26€1.5MReal Oviedo
2024-06-24€1.8MReal Oviedo
2024-12-27€2.5MRCD Mallorca
2025-06-09€5MRCD Mallorca
2025-12-12€5MRCD Mallorca
2026-03-16€6MRCD Mallorca
2026-06-05€6MRCD Mallorca

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
−0.002

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 61% of the 509 LaLiga players.

€100k€1M€10M€100M€6MSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 82% of the 485 goalkeepers.

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

Where Román 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).