Jozhua
Vertrouwd
CBNetherlands · Rayo Vallecano
Player dossierLaLiga
JozhuaVertrouwd
CBCentre-BackDefender
- Club
- Rayo Vallecano
- League
- LaLiga
- Nationality
- Netherlands
- Age
- 21
- Height
- 187 cm
- Foot
- Left
- Valued
- 5 Jun 2026
LaLigaReading the valuation
The market values Vertrouwd at €2M. Model A, which never saw Vertrouwd during training, estimates €2.9M: the market value is 31% below that estimate.
That is a factor of ×1.44. 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 €1.4M, 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
- 14
- Minutes
- 859
- Goals
- 0
- Assists
- 0
- Started
- 8/14
- Min / app
- 61
- 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 Vertrouwd…
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 €2M
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.
21% this player0% defender median85th 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
- €25k
- Mar 2022
- Peak
- €3M
- Dec 2025
- Model target
- €2M
- Jun 2026
- Valuations
- 15
- 3 club changes
Jun 2026: €2M, Rayo Vallecano. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2022-03-24 | €25k | FC Volendam U21 |
| 2022-06-23 | €50k | FC Volendam U21 |
| 2022-10-12 | €75k | FC Utrecht U21 |
| 2023-07-04 | €125k | FC Utrecht U21 |
| 2023-10-13 | €150k | CD Castellón |
| 2023-12-20 | €150k | CD Castellón |
| 2024-06-24 | €150k | CD Castellón |
| 2024-10-14 | €300k | CD Castellón |
| 2024-12-13 | €300k | CD Castellón |
| 2025-03-27 | €600k | CD Castellón |
| 2025-06-24 | €1M | CD Castellón |
| 2025-10-02 | €1.5M | Rayo Vallecano |
| 2025-12-12 | €3M | Rayo Vallecano |
| 2026-03-16 | €2.5M | Rayo Vallecano |
| 2026-06-05 | €2M | Rayo Vallecano |
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
- −0.367
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 →Defenders, all leagues2,065 players · median €2M
Valued above 49% of the 2,065 defenders.
See them in the Explorer →Where Vertrouwd appears
- TerminalLaLiga in the Player Explorer
- TerminalLaLiga 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
- GudeljDMSevilla FC · LaLiga€2M
- GalarretaCMAthletic Bilbao · LaLiga€2M
- ToljanRBLevante UD · LaLiga€2M
- DimitrievskiGKValencia CF · LaLiga€2M
- HummelsCBAS Roma · defenders€2M
- GünterLBSC Freiburg · defenders€2M
- KohrCB1.FSV Mainz 05 · defenders€2M
- KayembeLBKRC Genk · defenders€2M
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).