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…

Franco

Cervi

LWArgentina · Celta de Vigo

№ 341110Emerging €713k −0.17

Player dossierLaLiga

FrancoCervi

LWLeft WingerAttack

Club
Celta de Vigo
League
LaLiga
Nationality
Argentina
Age
32
Height
166 cm
Foot
Left
Valued
5 Jun 2026

Reading the valuation

The market values Cervi at €600k. Model A, which never saw Cervi during training, estimates €713k: the market value is 16% below that estimate.

That is a factor of ×1.19. 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 €483k, 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.

▼ −0.17A €713k▲ +0.22B €483k
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
14
Minutes
707
Goals
0
Assists
1
Started
8/14
Min / app
51
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 Cervi…

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 €600k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €600kModel A €713k

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

Franco Cervi's percentiles among attackers: Goals per 90 3rd, Assists per 90 42nd, Minutes, two years 9th, Starts 47th, Minutes, last 365 days 4th, European club minutes 59th3rdGoals42ndAssists9thMinutes47thStarts4thRecent59thEurope

Dashed ring: the attacker median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

2% this player0% attacker median59th 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
€125k
Jan 2015
Peak
€18M
Jun 2018
Model target
€600k
Jun 2026
Valuations
32
2 club changes
Jun 2026€600kCelta de VigoValuation the model is trained to reproduce

Jun 2026: €600k, Celta de Vigo. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2015-01-11€125kCA Rosario Central
2015-04-07€500kCA Rosario Central
2015-07-14€5MCA Rosario Central
2016-02-06€5.5MCA Rosario Central
2016-07-29€5.5MSL Benfica
2017-02-22€7MSL Benfica
2017-06-26€8MSL Benfica
2018-02-07€13MSL Benfica
2018-04-16€16MSL Benfica
2018-06-13€18MSL Benfica
2019-01-11€16MSL Benfica
2019-06-07€12MSL Benfica
2019-10-11€10MSL Benfica
2019-12-30€10MSL Benfica
2020-04-08€8MSL Benfica
2020-08-17€8MSL Benfica
2020-10-22€7MSL Benfica
2021-01-28€5MSL Benfica
2021-05-21€5MSL Benfica
2021-12-30€4MCelta de Vigo
2022-06-03€5MCelta de Vigo
2022-11-07€3MCelta de Vigo
2023-06-13€3MCelta de Vigo
2023-10-13€2.5MCelta de Vigo
2023-12-22€2MCelta de Vigo
2024-03-21€1.8MCelta de Vigo
2024-06-07€1.5MCelta de Vigo
2024-10-11€1MCelta de Vigo
2024-12-27€900kCelta de Vigo
2025-06-09€800kCelta de Vigo
2025-12-12€700kCelta de Vigo
2026-06-05€600kCelta de Vigo

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
−0.172

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 →

LaLiga509 players · median €4M

Valued above 3% of the 509 LaLiga players.

€100k€1M€10M€100M€600kSee them in the Explorer →

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

Valued above 19% of the 1,583 attackers.

€20k€300k€5M€75M€600kSee them in the Explorer →

Where Cervi 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).