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 Fábio Silva

Fábio

Silva

CFPortugal · Borussia Dortmund

№ 505653Elite €14.9M +0.39

Image: FootyLogos

Player dossierBundesliga

FábioSilva

CFCentre-ForwardAttack

Club
Borussia Dortmund
League
Bundesliga
Nationality
Portugal
Age
23
Height
185 cm
Foot
Right
Valued
27 May 2026

Reading the valuation

The market values Silva at €22M. Model A, which never saw Silva during training, estimates €14.9M: the market value is 48% above that estimate.

That is a factor of ×1.48. 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 €8.7M, 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 €14.9M▲ +0.93B €8.7M
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
64
Minutes
3,135
Goals
13
Assists
10
Started
33/64
Min / app
49
Cards
12Y 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 Silva…

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 €22M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €22MModel A €14.9M

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

Fábio Silva's percentiles among attackers: Goals per 90 72nd, Assists per 90 88th, Minutes, two years 68th, Starts 37th, Minutes, last 365 days 45th, European club minutes 69th72ndGoals88thAssists68thMinutes37thStarts45thRecent69thEurope

Dashed ring: the attacker median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.29 this player0.15 attacker median88th 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
€3M
Oct 2019
Peak
€28M
Oct 2025
Model target
€22M
May 2026
Valuations
21
7 club changes
May 2026€22MBorussia DortmundValuation the model is trained to reproduce

May 2026: €22M, Borussia Dortmund. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2019-10-11€3MFC Porto
2019-12-30€10MFC Porto
2020-04-08€9MFC Porto
2020-08-17€12MFC Porto
2020-10-13€25MWolverhampton Wanderers
2021-03-18€25MWolverhampton Wanderers
2021-06-08€25MWolverhampton Wanderers
2021-12-23€22MWolverhampton Wanderers
2022-03-29€18MWolverhampton Wanderers
2022-06-15€15MWolverhampton Wanderers
2022-11-04€13MRSC Anderlecht
2023-06-23€13MPSV Eindhoven
2023-10-09€15MWolverhampton Wanderers
2023-12-19€13MWolverhampton Wanderers
2024-05-30€11MRangers FC
2024-12-27€18MUD Las Palmas
2025-03-21€20MUD Las Palmas
2025-06-09€20MUD Las Palmas
2025-10-14€28MBorussia Dortmund
2025-12-19€28MBorussia Dortmund
2026-05-27€22MBorussia Dortmund

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
+0.392

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 →

Bundesliga451 players · median €5M

Valued above 85% of the 451 Bundesliga players.

€300k€2M€15M€100M€22MSee them in the Explorer →

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

Valued above 89% of the 1,583 attackers.

€20k€300k€5M€75M€22MSee them in the Explorer →

Where Silva 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).