FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Jayden Bogle

Jayden

Bogle

RBEngland · Leeds United

№ 465717Elite €21.8M −0.38

Image: FootyLogos

Player dossierPremier League

JaydenBogle

RBRight-BackDefender

Club
Leeds United
League
Premier League
Nationality
England
Age
25
Height
178 cm
Foot
Right
Valued
3 Jun 2026

Reading the valuation

The market values Bogle at €15M. Model A, which never saw Bogle during training, estimates €21.8M: the market value is 31% below that estimate.

That is a factor of ×1.46. 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 €4.6M, 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.

▼ −0.38A €21.8M▲ +1.19B €4.6M
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
39
Minutes
3,077
Goals
2
Assists
4
Started
34/39
Min / app
79
Cards
8Y 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 Bogle…

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 €15M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €15MModel A €21.8M

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

Jayden Bogle's percentiles among defenders: Goals per 90 69th, Assists per 90 81st, Minutes, two years 54th, Starts 62nd, Minutes, last 365 days 90th, European club minutes 30th69thGoals81stAssists54thMinutes62ndStarts90thRecent30thEurope

Dashed ring: the defender median (50th percentile)

Minutes, last 365 days

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

3,077 this player1,687 defender median90th percentile

0peer deciles · median line · this player ●4,941

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
€250k
Sept 2018
Peak
€15M
Jun 2026
Model target
€15M
Jun 2026
Valuations
21
2 club changes
Jun 2026€15MLeeds UnitedValuation the model is trained to reproduce

Jun 2026: €15M, Leeds United. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2018-09-24€250kDerby County
2019-02-27€3.5MDerby County
2019-06-28€7MDerby County
2020-02-27€7MDerby County
2020-04-08€6.3MDerby County
2020-10-13€6.3MSheffield United
2021-03-18€7MSheffield United
2021-06-08€7MSheffield United
2021-11-24€6MSheffield United
2022-05-13€5MSheffield United
2022-10-27€4MSheffield United
2023-06-01€3.8MSheffield United
2023-12-19€3.8MSheffield United
2024-05-27€3.8MSheffield United
2024-09-24€5MLeeds United
2024-12-30€5.5MLeeds United
2025-05-27€9MLeeds United
2025-10-17€10MLeeds United
2025-12-09€10MLeeds United
2026-03-09€12MLeeds United
2026-06-03€15MLeeds United

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
−0.376

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 43% of the 555 Premier League players.

€150k€1M€7.5M€50M€15MSee them in the Explorer →

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

Valued above 87% of the 2,065 defenders.

€20k€200k€2M€20M€15MSee them in the Explorer →

Where Bogle 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).