Marco

Sportiello

GKItaly · Atalanta BC

№ 199976Emerging €795k +0.01

Player dossierSerie A

MarcoSportiello

GKGoalkeeperGoalkeeper

Club: Atalanta BC
League: Serie A
Nationality: Italy
Age: 34
Height: 192 cm
Foot: Right
Valued: 29 May 2026

Reading the valuation

The market values Sportiello at €800k. Model A, which never saw Sportiello during training, estimates €795k: the market value is 1% above that estimate.

That is a factor of ×1.01. 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 €827k, 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: 7
Minutes: 530
Started: 6/7
Min / app: 76
Cards: 0Y 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 Sportiello…

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 €800k

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 485 goalkeepers

Dashed ring: the goalkeeper median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

34% this player0% goalkeeper median96th percentile

0%peer deciles · median line · this player ●86%

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: €250k; Jul 2012
Peak: €10M; Jul 2016
Model target: €800k; May 2026
Valuations: 35; 7 club changes

May 2026€800kAtalanta BCValuation the model is trained to reproduce

May 2026: €800k, Atalanta BC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table

Date	Market value	Club
2012-07-09	€250k	Atalanta BC
2013-02-06	€350k	Carpi FC 1909
2013-06-19	€350k	Carpi FC 1909
2014-01-07	€400k	Atalanta BC
2014-07-01	€400k	Atalanta BC
2014-11-08	€1.5M	Atalanta BC
2015-01-07	€2.5M	Atalanta BC
2015-03-20	€5M	Atalanta BC
2015-07-01	€6M	Atalanta BC
2015-11-05	€7.5M	Atalanta BC
2016-01-04	€8M	Atalanta BC
2016-07-15	€10M	Atalanta BC
2017-01-02	€9M	Atalanta BC
2017-03-28	€7M	ACF Fiorentina
2017-06-08	€6M	ACF Fiorentina
2017-12-29	€7M	ACF Fiorentina
2018-06-07	€6M	ACF Fiorentina
2018-10-12	€5M	Frosinone Calcio
2018-12-20	€5M	Frosinone Calcio
2019-06-06	€4M	Frosinone Calcio
2019-12-12	€2.5M	Atalanta BC
2020-04-08	€2M	Atalanta BC
2020-08-25	€2M	Atalanta BC
2020-12-29	€2M	Atalanta BC
2021-06-03	€2M	Atalanta BC
2021-12-28	€1.5M	Atalanta BC
2022-06-07	€1.5M	Atalanta BC
2022-11-11	€1.5M	Atalanta BC
2023-06-15	€1.5M	Atalanta BC
2023-12-20	€1.5M	AC Milan
2024-06-05	€1.5M	AC Milan
2024-12-18	€1.5M	AC Milan
2025-06-17	€1M	AC Milan
2025-12-23	€1M	Atalanta BC
2026-05-29	€800k	Atalanta BC

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: +0.007

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 4% of the 507 Serie A players.

See them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 39% of the 485 goalkeepers.

See them in the Explorer →

Where Sportiello 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).