FairValue

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

GKBrazil · Avs Futebol

№ 808445Emerging €493k +0.60

Player dossierLiga Portugal

Adriel

GKGoalkeeperGoalkeeper

Club
Avs Futebol
League
Liga Portugal
Nationality
Brazil
Age
25
Height
195 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Adriel at €900k. Model A, which never saw Adriel during training, estimates €493k: the market value is 82% above that estimate.

That is a factor of ×1.82. 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 €1.1M, 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.

▲ +0.60A €493k▼ −0.22B €1.1M
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
16
Minutes
1,440
Started
16/16
Min / app
90
Cards
2Y 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 Adriel…

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 €900k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €900kModel A €493k

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 485 goalkeepers

Adriel's percentiles among goalkeepers: Minutes, two years 28th, Starts 62nd, Minutes, last 365 days 47th, European club minutes 32nd28thMinutes62ndStarts47thRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

100% this player100% goalkeeper median62nd percentile

70%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
May 2021
Peak
€1.5M
Mar 2024
Model target
€900k
May 2026
Valuations
12
2 club changes
May 2026€900kAvs FutebolValuation the model is trained to reproduce

May 2026: €900k, Avs Futebol. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2021-05-28€100kGrêmio Foot-Ball Porto Alegrense
2021-12-17€200kGrêmio Foot-Ball Porto Alegrense
2022-08-05€200kGrêmio Foot-Ball Porto Alegrense
2023-04-07€1.2MGrêmio Foot-Ball Porto Alegrense
2023-07-25€1.2MGrêmio Foot-Ball Porto Alegrense
2023-12-11€1.2MGrêmio Foot-Ball Porto Alegrense
2024-03-28€1.5MGrêmio Foot-Ball Porto Alegrense
2024-06-17€1.5MGrêmio Foot-Ball Porto Alegrense
2024-12-09€1.2MGrêmio Foot-Ball Porto Alegrense
2025-06-27€1MAthletic Club
2025-11-24€800kAthletic Club
2026-05-28€900kAvs Futebol

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
+0.601

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 41% of the 423 Liga Portugal players.

€20k€200k€2M€20M€900kSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 45% of the 485 goalkeepers.

€20k€200k€2M€20M€900kSee them in the Explorer →

Where Adriel 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).