Mattia
Zaccagni
LWItaly · SS Lazio
Close-up
Image: FootyLogos
Player dossierSerie A
MattiaZaccagni
LWLeft WingerAttack
- Club
- SS Lazio
- League
- Serie A
- Nationality
- Italy
- Age
- 30
- Height
- 177 cm
- Foot
- Right
- Valued
- 29 May 2026
Reading the valuation
The market values Zaccagni at €7.5M. Model A, which never saw Zaccagni during training, estimates €8.9M: 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 €7.6M, closer to the market here, although it is usually further off (typical miss ×2.07).
A gap describes the model's arithmetic for this player's inputs, not what the player is worth.
- Apps
- 75
- Minutes
- 5,778
- Goals
- 14
- Assists
- 11
- Started
- 70/75
- Min / app
- 77
- Cards
- 21Y 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 Zaccagni…
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 €7.5M
Checking APIAsking 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
Dashed ring: the attacker median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
93% this player59% attacker median97th percentile
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
- Aug 2013
- Peak
- €30M
- Jun 2023
- Model target
- €7.5M
- May 2026
- Valuations
- 33
- 6 club changes
May 2026: €7.5M, SS Lazio. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2013-08-10 | €75k | AC Bellaria Igea Marina |
| 2014-05-08 | €75k | Hellas Verona Primavera |
| 2015-02-04 | €125k | FBC Unione Venezia |
| 2015-06-19 | €250k | FBC Unione Venezia |
| 2016-01-04 | €300k | Hellas Verona |
| 2016-06-15 | €300k | AS Cittadella |
| 2016-12-19 | €500k | Hellas Verona |
| 2017-06-09 | €500k | Hellas Verona |
| 2017-12-29 | €500k | Hellas Verona |
| 2018-06-07 | €500k | Hellas Verona |
| 2019-01-17 | €800k | Hellas Verona |
| 2019-06-05 | €1.3M | Hellas Verona |
| 2019-10-08 | €2.5M | Hellas Verona |
| 2019-12-12 | €3M | Hellas Verona |
| 2020-03-03 | €7M | Hellas Verona |
| 2020-04-08 | €5.5M | Hellas Verona |
| 2020-08-25 | €8.5M | Hellas Verona |
| 2020-12-29 | €15M | Hellas Verona |
| 2021-06-03 | €15M | Hellas Verona |
| 2021-12-28 | €14M | SS Lazio |
| 2022-03-15 | €18M | SS Lazio |
| 2022-06-07 | €18M | SS Lazio |
| 2022-11-11 | €22M | SS Lazio |
| 2023-03-21 | €25M | SS Lazio |
| 2023-06-15 | €30M | SS Lazio |
| 2023-12-20 | €25M | SS Lazio |
| 2024-03-12 | €22M | SS Lazio |
| 2024-06-05 | €20M | SS Lazio |
| 2024-12-18 | €20M | SS Lazio |
| 2025-06-17 | €20M | SS Lazio |
| 2025-12-23 | €15M | SS Lazio |
| 2026-03-24 | €12M | SS Lazio |
| 2026-05-29 | €7.5M | SS Lazio |
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
- −0.173
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 59% of the 507 Serie A players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 73% of the 1,583 attackers.
See them in the Explorer →Where Zaccagni 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
- LorenzoRBSSC Napoli · Serie A€7.5M
- MurićGKUS Sassuolo · Serie A€7.5M
- CocoCBTorino FC · Serie A€7.5M
- LipaniDMUS Sassuolo · Serie A€7.5M
- MartínezCFDeportivo Alavés · attackers€7.5M
- PuadoLWRCD Espanyol Barcelona · attackers€7.5M
- TrenskowRWSC Heerenveen · attackers€7.5M
- DriouechLWPSV Eindhoven · attackers€7.5M
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).