FairValue

Checking model

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

Vermant

CFBelgium · Club Brugge KV

№ 708454Established €6.2M +0.37

Player dossierPro League

RomeoVermant

CFCentre-ForwardAttack

Club
Club Brugge KV
League
Pro League
Nationality
Belgium
Age
22
Height
184 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Vermant at €9M. Model A, which never saw Vermant during training, estimates €6.2M: 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 €15.5M, 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 €6.2M▼ −0.54B €15.5M
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
72
Minutes
2,641
Goals
15
Assists
5
Started
27/72
Min / app
37
Cards
6Y 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 Vermant…

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 €9M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €9MModel A €6.2M

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

Romeo Vermant's percentiles among attackers: Goals per 90 89th, Assists per 90 59th, Minutes, two years 60th, Starts 18th, Minutes, last 365 days 71st, European club minutes 86th89thGoals59thAssists60thMinutes18thStarts71stRecent86thEurope

Dashed ring: the attacker median (50th percentile)

Goals per 90

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

0.51 this player0.26 attacker median89th percentile

0.00peer deciles · median line · this player ●1.17

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
€50k
Oct 2020
Peak
€11M
Mar 2026
Model target
€9M
Jun 2026
Valuations
14
3 club changes
Jun 2026€9MClub Brugge KVValuation the model is trained to reproduce

Jun 2026: €9M, Club Brugge KV. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2020-10-21€50kClub NXT
2022-10-05€350kClub NXT
2022-12-22€500kClub NXT
2023-05-30€900kClub Brugge KV
2023-10-02€1.2MClub Brugge KV
2023-12-19€1.2MClub Brugge KV
2024-06-04€1.8MKVC Westerlo
2024-10-02€2.8MClub Brugge KV
2024-12-11€4MClub Brugge KV
2025-06-12€6MClub Brugge KV
2025-10-01€8MClub Brugge KV
2025-12-10€8MClub Brugge KV
2026-03-13€11MClub Brugge KV
2026-06-04€9MClub Brugge KV

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
+0.374

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 →

Pro League350 players · median €1.8M

Valued above 95% of the 350 Pro League players.

€100k€750k€5M€30M€9MSee them in the Explorer →

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

Valued above 76% of the 1,583 attackers.

€20k€300k€5M€75M€9MSee them in the Explorer →

Where Vermant 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).