Josep
Martínez
GKSpain · Inter Milan
Close-up
Image: FootyLogos
Player dossierSerie A
JosepMartínez
GKGoalkeeperGoalkeeper
- Club
- Inter Milan
- League
- Serie A
- Nationality
- Spain
- Age
- 28
- Height
- 191 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Martínez at €10M. Model A, which never saw Martínez during training, estimates €5.5M: the market value is 81% above that estimate.
That is a factor of ×1.81. 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 €2M, 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
- 20
- Minutes
- 1,800
- Started
- 20/20
- 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 Martínez…
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
5% this player0% goalkeeper median68th 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
- €100k
- Aug 2017
- Peak
- €12M
- Oct 2024
- Model target
- €10M
- May 2026
- Valuations
- 25
- 4 club changes
May 2026: €10M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2017-08-17 | €100k | Las Palmas Atlético |
| 2018-01-01 | €100k | Las Palmas Atlético |
| 2018-06-30 | €200k | Las Palmas Atlético |
| 2019-02-19 | €250k | Las Palmas Atlético |
| 2019-06-29 | €500k | Las Palmas Atlético |
| 2019-09-10 | €800k | UD Las Palmas |
| 2019-12-20 | €700k | UD Las Palmas |
| 2020-02-11 | €2.5M | UD Las Palmas |
| 2020-04-08 | €2.3M | UD Las Palmas |
| 2020-09-16 | €2.5M | RB Leipzig |
| 2021-02-10 | €2.5M | RB Leipzig |
| 2021-06-09 | €2.5M | RB Leipzig |
| 2021-12-22 | €2.5M | RB Leipzig |
| 2022-06-09 | €2.2M | RB Leipzig |
| 2022-12-22 | €1.9M | Genoa CFC |
| 2023-06-12 | €3.5M | Genoa CFC |
| 2023-12-20 | €4M | Genoa CFC |
| 2024-03-12 | €6M | Genoa CFC |
| 2024-06-05 | €8M | Genoa CFC |
| 2024-10-18 | €12M | Inter Milan |
| 2024-12-18 | €12M | Inter Milan |
| 2025-06-17 | €12M | Inter Milan |
| 2025-12-23 | €9M | Inter Milan |
| 2026-03-24 | €7.5M | Inter Milan |
| 2026-05-29 | €10M | Inter Milan |
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
- +0.595
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 →Goalkeepers, all leagues485 players · median €1M
Valued above 88% of the 485 goalkeepers.
See them in the Explorer →Where Martínez 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
- OnanaGKTrabzonspor · goalkeepers€10M
- EdersonGKFenerbahce · goalkeepers€10M
- GregorioGKJuventus FC · goalkeepers€10M
- OkoyeGKUdinese Calcio · goalkeepers€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).