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 Lorenzo Pellegrini

Lorenzo

Pellegrini

AMItaly · AS Roma

№ 286297Established €10.8M −0.30

Image: FootyLogos

Player dossierSerie A

LorenzoPellegrini

AMAttacking MidfieldMidfield

Club
AS Roma
League
Serie A
Nationality
Italy
Age
29
Height
186 cm
Foot
Right
Valued
29 May 2026

Reading the valuation

The market values Pellegrini at €8M. Model A, which never saw Pellegrini during training, estimates €10.8M: the market value is 26% below that estimate.

That is a factor of ×1.35. 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 €4.6M, 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.

▼ −0.30A €10.8M▲ +0.56B €4.6M
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
67
Minutes
4,115
Goals
10
Assists
7
Started
50/67
Min / app
61
Cards
7Y 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 Pellegrini…

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 €10.8M

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 1,687 midfielders

Lorenzo Pellegrini's percentiles among midfielders: Goals per 90 85th, Assists per 90 72nd, Minutes, two years 76th, Starts 60th, Minutes, last 365 days 64th, European club minutes 89th85thGoals72ndAssists76thMinutes60thStarts64thRecent89thEurope

Dashed ring: the midfielder median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

23% this player0% midfielder median89th percentile

0%peer deciles · median line · this player ●85%

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
€175k
Jun 2014
Peak
€45M
Oct 2021
Model target
€8M
May 2026
Valuations
33
2 club changes
May 2026€8MAS RomaValuation the model is trained to reproduce

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

Show as a table
DateMarket valueClub
2014-06-24€175kRoma U19
2015-03-02€200kRoma U19
2015-06-17€250kRoma U19
2016-01-04€1MUS Sassuolo
2016-07-15€2.5MUS Sassuolo
2017-01-02€6MUS Sassuolo
2017-03-28€8MUS Sassuolo
2017-06-08€12MUS Sassuolo
2017-12-29€16MAS Roma
2018-03-24€23MAS Roma
2018-06-07€28MAS Roma
2018-12-20€35MAS Roma
2019-06-06€35MAS Roma
2019-10-08€40MAS Roma
2019-12-12€40MAS Roma
2020-04-08€32MAS Roma
2020-08-25€32MAS Roma
2020-12-29€37MAS Roma
2021-05-25€40MAS Roma
2021-10-14€45MAS Roma
2021-12-28€45MAS Roma
2022-06-07€45MAS Roma
2022-11-11€45MAS Roma
2023-03-21€35MAS Roma
2023-06-15€35MAS Roma
2023-10-11€30MAS Roma
2023-12-20€25MAS Roma
2024-06-05€25MAS Roma
2024-10-18€22MAS Roma
2024-12-18€14MAS Roma
2025-06-17€9MAS Roma
2025-12-23€9MAS Roma
2026-05-29€8MAS Roma

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
−0.298

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 →

Midfielders, all leagues1,687 players · median €2M

Valued above 74% of the 1,687 midfielders.

€20k€200k€2M€20M€8MSee them in the Explorer →

Where Pellegrini 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).