FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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  • TerminalMarket LandscapeHow observed value is distributed, and where the model drifts.

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Diogo

Bezerra

RWBrazil · Rio Ave FC

№ 947404Emerging €902k +0.69

Player dossierLiga Portugal

DiogoBezerra

RWRight WingerAttack

Club
Rio Ave FC
League
Liga Portugal
Nationality
Brazil
Age
23
Height
186 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Bezerra at €1.8M. Model A, which never saw Bezerra during training, estimates €902k: the market value is 100% above that estimate.

That is a factor of ×2.00. 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 €1M, 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.

▲ +0.69A €902k▲ +0.58B €1M
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
17
Minutes
1,267
Goals
1
Assists
2
Started
14/17
Min / app
75
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 Bezerra…

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 €1.8M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €1.8MModel A €902k

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

Diogo Bezerra's percentiles among attackers: Goals per 90 10th, Assists per 90 48th, Minutes, two years 26th, Starts 86th, Minutes, last 365 days 49th, European club minutes 28th10thGoals48thAssists26thMinutes86thStarts49thRecent28thEurope

Dashed ring: the attacker median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

82% this player59% attacker median86th percentile

5%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
€100k
Dec 2024
Peak
€1.8M
Dec 2025
Model target
€1.8M
May 2026
Valuations
6
2 club changes
May 2026€1.8MRio Ave FCValuation the model is trained to reproduce

May 2026: €1.8M, Rio Ave FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2024-12-11€100kNS Mura
2025-03-25€300kOFK Beograd
2025-06-12€600kOFK Beograd
2025-09-16€1.5MOFK Beograd
2025-12-11€1.8MOFK Beograd
2026-05-28€1.8MRio Ave 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
+0.691

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 →

Liga Portugal423 players · median €1M

Valued above 60% of the 423 Liga Portugal players.

€20k€200k€2M€20M€1.8MSee them in the Explorer →

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

Valued above 43% of the 1,583 attackers.

€20k€300k€5M€75M€1.8MSee them in the Explorer →

Where Bezerra 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).