FairValue

Checking model

Esc

  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
  • EnvironmentTerminalExplore, compare and track players; market, league and model views.
  • EnvironmentStoriesValuations, head-to-heads and research findings, told as stories.
  • TerminalPlayer ExplorerSearch, filter and sort the player export.
  • TerminalComparison StudioTwo to four players on one scale.
  • TerminalWatchlistsNamed collections, kept in this browser.
  • TerminalMarket LandscapeHow observed value is distributed, and where the model drifts.

↑ ↓ to move · Enter to open · Esc to closeLoading player index…

Portrait of Jérémie Boga

Jérémie

Boga

LWCote d'Ivoire · Juventus FC

№ 216569Established €11.8M −0.39

Close-up

Image: FootyLogos

Player dossierSerie A

JérémieBoga

LWLeft WingerAttack

Club
Juventus FC
League
Serie A
Nationality
Cote d'Ivoire
Age
29
Height
172 cm
Foot
Right
Valued
29 May 2026

Reading the valuation

The market values Boga at €8M. Model A, which never saw Boga during training, estimates €11.8M: the market value is 32% below that estimate.

That is a factor of ×1.47. 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 €5.3M, 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.

▼ −0.39A €11.8M▲ +0.41B €5.3M
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
61
Minutes
2,884
Goals
9
Assists
4
Started
29/61
Min / app
47
Cards
1Y 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 Boga…

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 €8M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €8MModel A €11.8M

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 1,583 attackers

Jérémie Boga's percentiles among attackers: Goals per 90 54th, Assists per 90 41st, Minutes, two years 64th, Starts 31st, Minutes, last 365 days 63rd, European club minutes 79th54thGoals41stAssists64thMinutes31stStarts63rdRecent79thEurope

Dashed ring: the attacker median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

17% this player0% attacker median79th percentile

0%peer deciles · median line · this player ●100%

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
€1M
Sept 2015
Peak
€25M
Aug 2020
Model target
€8M
May 2026
Valuations
27
6 club changes
May 2026€8MJuventus FCValuation the model is trained to reproduce

May 2026: €8M, Juventus FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2015-09-06€1MStade Rennais FC
2016-02-04€2MStade Rennais FC
2016-07-15€2MGranada CF
2017-01-24€2.5MGranada CF
2017-06-05€2.5MGranada CF
2018-02-27€2.5MBirmingham City
2018-10-12€3.5MUS Sassuolo
2018-12-20€3.5MUS Sassuolo
2019-06-06€6MUS Sassuolo
2019-12-12€12MUS Sassuolo
2020-03-03€20MUS Sassuolo
2020-04-08€16MUS Sassuolo
2020-08-25€25MUS Sassuolo
2020-12-29€25MUS Sassuolo
2021-03-23€22MUS Sassuolo
2021-06-03€20MUS Sassuolo
2021-12-28€20MUS Sassuolo
2022-06-07€19MAtalanta BC
2022-11-11€15MAtalanta BC
2023-06-15€14MAtalanta BC
2023-12-18€15MOGC Nice
2024-06-03€15MOGC Nice
2024-12-10€15MOGC Nice
2025-03-24€12MOGC Nice
2025-06-03€10MOGC Nice
2025-12-15€8MOGC Nice
2026-05-29€8MJuventus FC

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
−0.388

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

Valued above 60% of the 507 Serie A players.

€100k€750k€5M€30M€8MSee them in the Explorer →

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

Valued above 74% of the 1,583 attackers.

€20k€300k€5M€75M€8MSee them in the Explorer →

Where Boga 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).