Adrian
Semper
GKCroatia · Pisa Sporting Club
Player dossierSerie A
AdrianSemper
GKGoalkeeperGoalkeeper
- Club
- Pisa Sporting Club
- League
- Serie A
- Nationality
- Croatia
- Age
- 28
- Height
- 194 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Semper at €1.8M. Model A, which never saw Semper during training, estimates €2M: the market value is 12% below that estimate.
That is a factor of ×1.14. 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 €2.5M, 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
- 26
- Minutes
- 2,340
- Started
- 26/26
- Min / app
- 90
- 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 Semper…
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 €1.8M
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
Minutes, last 365 days
Club minutes in the final year of the window: recent involvement, or the absence of it.
2,340 this player1,560 goalkeeper median65th 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
- €1M
- Sept 2016
- Peak
- €3.5M
- Jun 2025
- Model target
- €1.8M
- May 2026
- Valuations
- 22
- 5 club changes
May 2026: €1.8M, Pisa Sporting Club. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2016-09-14 | €1M | GNK Dinamo Zagreb |
| 2017-03-13 | €1M | NK Lokomotiva Zagreb |
| 2017-10-23 | €800k | NK Lokomotiva Zagreb |
| 2018-03-18 | €800k | NK Lokomotiva Zagreb |
| 2018-12-20 | €800k | Chievo Verona |
| 2019-06-06 | €1M | Chievo Verona |
| 2019-12-30 | €1M | Chievo Verona |
| 2020-04-08 | €900k | Chievo Verona |
| 2020-08-21 | €1M | Chievo Verona |
| 2021-02-22 | €1.5M | Chievo Verona |
| 2021-06-24 | €2.3M | Chievo Verona |
| 2021-12-28 | €2M | Genoa CFC |
| 2022-06-07 | €1.5M | Genoa CFC |
| 2022-12-22 | €1.5M | Genoa CFC |
| 2023-06-12 | €1.2M | Genoa CFC |
| 2023-12-27 | €1.4M | Como 1907 |
| 2024-06-03 | €2.5M | Como 1907 |
| 2024-12-23 | €2.7M | Pisa Sporting Club |
| 2025-06-02 | €3.5M | Pisa Sporting Club |
| 2025-12-23 | €3.5M | Pisa Sporting Club |
| 2026-03-24 | €2M | Pisa Sporting Club |
| 2026-05-29 | €1.8M | Pisa Sporting Club |
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
- −0.129
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 18% of the 507 Serie A players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 58% of the 485 goalkeepers.
See them in the Explorer →Where Semper 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
- SanabriaCFUS Cremonese · Serie A€1.8M
- AlmqvistRWParma Calcio 1913 · Serie A€1.8M
- LérisRWPisa Sporting Club · Serie A€1.8M
- RavagliaGKBologna FC 1909 · Serie A€1.8M
- TrappGKParis FC · goalkeepers€1.8M
- RyanGKLevante UD · goalkeepers€1.8M
- GazzanigaGKGirona FC · goalkeepers€1.8M
- BayazıtGKKayserispor · goalkeepers€1.8M
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).