Gianluca

Mancini

CBItaly · AS Roma

№ 256448Elite €14.7M +0.02

Image: FootyLogos

Player dossierSerie A

GianlucaMancini

CBCentre-BackDefender

Club: AS Roma
League: Serie A
Nationality: Italy
Age: 30
Height: 190 cm
Foot: Right
Valued: 29 May 2026

Reading the valuation

The market values Mancini at €15M. Model A, which never saw Mancini during training, estimates €14.7M: the market value is 2% above that estimate.

That is a factor of ×1.02. 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 €12.1M, 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.

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: 91
Minutes: 7,647
Goals: 8
Assists: 4
Started: 88/91
Min / app: 84
Cards: 20Y 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 Mancini…

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 €15M

Checking API

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 2,065 defenders

Dashed ring: the defender median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

7,647 this player2,860 defender median99th percentile

451peer deciles · median line · this player ●9,111

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: €75k; Jun 2014
Peak: €30M; Mar 2021
Model target: €15M; May 2026
Valuations: 29; 3 club changes

May 2026€15MAS RomaValuation the model is trained to reproduce

May 2026: €15M, AS Roma. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table

Date	Market value	Club
2014-06-25	€75k	Fiorentina Primavera
2015-06-17	€125k	Fiorentina Primavera
2015-12-28	€125k	AC Perugia Calcio
2016-06-13	€200k	AC Perugia Calcio
2016-12-19	€200k	AC Perugia Calcio
2017-06-09	€800k	AC Perugia Calcio
2017-12-29	€800k	Atalanta BC
2018-03-24	€2M	Atalanta BC
2018-06-07	€2M	Atalanta BC
2018-12-20	€10M	Atalanta BC
2019-03-01	€15M	Atalanta BC
2019-06-06	€22M	Atalanta BC
2019-12-12	€28M	AS Roma
2020-04-08	€22.5M	AS Roma
2020-08-25	€22M	AS Roma
2020-12-29	€25M	AS Roma
2021-03-23	€30M	AS Roma
2021-05-25	€30M	AS Roma
2021-12-28	€30M	AS Roma
2022-03-15	€25M	AS Roma
2022-06-07	€21M	AS Roma
2022-11-11	€18M	AS Roma
2023-06-15	€18M	AS Roma
2023-12-20	€20M	AS Roma
2024-06-05	€25M	AS Roma
2024-12-18	€18M	AS Roma
2025-06-17	€15M	AS Roma
2025-12-23	€15M	AS Roma
2026-05-29	€15M	AS 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: +0.018

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 75% of the 507 Serie A players.

See them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 87% of the 2,065 defenders.

See them in the Explorer →

Where Mancini appears

TerminalSerie A in the Player Explorer
TerminalSerie A on the League Landscape

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).