Giorgio
Altare
CBItaly · UC Sampdoria
Player dossierSerie A
GiorgioAltare
CBCentre-BackDefender
- Club
- UC Sampdoria
- League
- Serie A
- Nationality
- Italy
- Age
- 27
- Height
- 190 cm
- Foot
- Right
- Valued
- 11 Dec 2025
Reading the valuation
The market values Altare at €800k. Model A, which never saw Altare during training, estimates €1.2M: the market value is 35% below that estimate.
That is a factor of ×1.53. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.
Without league and club, Model B estimates €547k, 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
- 12
- Minutes
- 751
- Goals
- 0
- Assists
- 0
- Started
- 8/12
- Min / app
- 63
- 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 Altare…
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 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 2,065 defenders
Dashed ring: the defender median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
0% this player0% defender median30th 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
- €50k
- Nov 2015
- Peak
- €2M
- Jun 2022
- Model target
- €800k
- Dec 2025
- Valuations
- 20
- 6 club changes
Dec 2025: €800k, UC Sampdoria. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2015-11-27 | €50k | Milan Primavera |
| 2016-06-30 | €50k | Milan Primavera |
| 2017-05-18 | €100k | Milan Primavera |
| 2018-06-30 | €75k | Genoa U19 |
| 2018-12-14 | €75k | Feralpisalò |
| 2019-06-20 | €75k | Feralpisalò |
| 2019-12-18 | €50k | Feralpisalò |
| 2020-06-28 | €50k | Olbia Calcio 1905 |
| 2021-01-11 | €125k | Olbia Calcio 1905 |
| 2021-06-21 | €175k | Olbia Calcio 1905 |
| 2021-12-28 | €200k | Cagliari Calcio |
| 2022-03-15 | €1.2M | Cagliari Calcio |
| 2022-06-07 | €2M | Cagliari Calcio |
| 2022-12-22 | €1.7M | Cagliari Calcio |
| 2023-06-12 | €1.5M | Cagliari Calcio |
| 2023-12-27 | €1.8M | Venezia FC |
| 2024-06-03 | €2M | Venezia FC |
| 2024-12-18 | €1.8M | Venezia FC |
| 2025-06-02 | €1M | UC Sampdoria |
| 2025-12-11 | €800k | UC Sampdoria |
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
- −0.428
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 →Defenders, all leagues2,065 players · median €2M
Valued above 29% of the 2,065 defenders.
See them in the Explorer →Where Altare 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
- BadeljDMGenoa CFC · Serie A€800k
- CuadradoRMPisa Sporting Club · Serie A€800k
- CaraccioloCBPisa Sporting Club · Serie A€800k
- BianchettiCBUS Cremonese · Serie A€800k
- WidmerRB1.FSV Mainz 05 · defenders€800k
- WinckRBKasimpasa · defenders€800k
- RodineiRBOlympiacos Piraeus · defenders€800k
- KuipersLBFC Arouca · defenders€800k
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).