Giovanni
Fabbian
AMItaly · ACF Fiorentina
Player dossierSerie A
GiovanniFabbian
AMAttacking MidfieldMidfield
- Club
- ACF Fiorentina
- League
- Serie A
- Nationality
- Italy
- Age
- 23
- Height
- 190 cm
- Foot
- Right
- Valued
- 29 May 2026
Reading the valuation
The market values Fabbian at €10M. Model A, which never saw Fabbian during training, estimates €8.6M: the market value is 16% above that estimate.
That is a factor of ×1.16. 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 €13.5M, 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.
- Apps
- 78
- Minutes
- 3,226
- Goals
- 6
- Assists
- 2
- Started
- 34/78
- Min / app
- 41
- 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 Fabbian…
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 €10M
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 1,687 midfielders
Dashed ring: the midfielder median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
20% this player0% midfielder median84th 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
- €500k
- Jun 2022
- Peak
- €14M
- Jun 2024
- Model target
- €10M
- May 2026
- Valuations
- 12
- 3 club changes
May 2026: €10M, ACF Fiorentina. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2022-06-23 | €500k | Inter Milan Primavera |
| 2022-09-27 | €1.3M | Reggina 1914 |
| 2022-12-22 | €3M | Reggina 1914 |
| 2023-03-20 | €6M | Reggina 1914 |
| 2023-06-12 | €6M | Reggina 1914 |
| 2023-12-20 | €7M | Bologna FC 1909 |
| 2024-03-12 | €12M | Bologna FC 1909 |
| 2024-06-05 | €14M | Bologna FC 1909 |
| 2024-12-18 | €13M | Bologna FC 1909 |
| 2025-06-17 | €12M | Bologna FC 1909 |
| 2025-12-23 | €10M | Bologna FC 1909 |
| 2026-05-29 | €10M | ACF Fiorentina |
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
- +0.150
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 65% of the 507 Serie A players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 78% of the 1,687 midfielders.
See them in the Explorer →Where Fabbian 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
- ZielinskiCMInter Milan · Serie A€10M
- LobotkaDMSSC Napoli · Serie A€10M
- RrahmaniCBSSC Napoli · Serie A€10M
- VlašićAMTorino FC · Serie A€10M
- KovacicCMManchester City · midfielders€10M
- EggesteinCMSC Freiburg · midfielders€10M
- TolissoCMOlympique Lyon · midfielders€10M
- SchlagerCMRB Leipzig · midfielders€10M
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).