FairValue

Checking model

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

Bany

CFJordan · West Bromwich Albion

№ 801989Emerging €2.7M −2.39

Player dossierPremier League

TammerBany

CFCentre-ForwardAttack

Club
West Bromwich Albion
League
Premier League
Nationality
Jordan
Age
22
Height
181 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Bany at €250k. Model A, which never saw Bany during training, estimates €2.7M: the market value is 91% below that estimate.

That is a factor of ×10.93. 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 €948k, closer to the market here, although it is usually further off (typical miss ×2.07).

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▼ −2.39A €2.7M▼ −1.33B €948k
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
783
Goals
2
Assists
5
Started
9/16
Min / app
49
Cards
3Y 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 Bany…

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 €250k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €250kModel A €2.7M

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

Tammer Bany's percentiles among attackers: Goals per 90 44th, Assists per 90 100th, Minutes, two years 12th, Starts 46th, Minutes, last 365 days 1st, European club minutes 28th44thGoals100thAssists12thMinutes46thStarts1stRecent28thEurope

Dashed ring: the attacker median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.57 this player0.15 attacker median100th 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
€50k
Sept 2023
Peak
€500k
Dec 2024
Model target
€250k
May 2026
Valuations
8
2 club changes
May 2026€250kWest Bromwich AlbionValuation the model is trained to reproduce

May 2026: €250k, West Bromwich Albion. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2023-09-19€50kBoldklubben af 1893
2023-12-21€75kBoldklubben af 1893
2024-06-10€100kRanders FC
2024-12-09€500kRanders FC
2025-03-28€250kWest Bromwich Albion
2025-05-27€250kWest Bromwich Albion
2025-12-03€250kWest Bromwich Albion
2026-05-28€250kWest Bromwich Albion

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
−2.392

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 →

Premier League555 players · median €18M

Valued above 1% of the 555 Premier League players.

€150k€1M€7.5M€50M€250kSee them in the Explorer →

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

Valued above 6% of the 1,583 attackers.

€20k€300k€5M€75M€250kSee them in the Explorer →

Where Bany 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).