Stefan de
Vrij
CBNetherlands · Inter Milan
Close-up
Image: FootyLogos
Player dossierSerie A
Stefan deVrij
CBCentre-BackDefender
- Club
- Inter Milan
- League
- Serie A
- Nationality
- Netherlands
- Age
- 34
- Height
- 189 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Vrij at €3M. Model A, which never saw Vrij during training, estimates €5M: the market value is 40% below that estimate.
That is a factor of ×1.67. 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 €1.8M, 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
- 60
- Minutes
- 4,193
- Goals
- 3
- Assists
- 1
- Started
- 47/60
- Min / app
- 70
- Cards
- 5Y 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 Vrij…
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 €3M
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.
26% this player0% defender median91st 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
- Oct 2009
- Peak
- €60M
- Dec 2019
- Model target
- €3M
- May 2026
- Valuations
- 41
- 2 club changes
May 2026: €3M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2009-10-02 | €50k | Feyenoord Rotterdam |
| 2010-01-07 | €100k | Feyenoord Rotterdam |
| 2010-08-04 | €650k | Feyenoord Rotterdam |
| 2011-01-17 | €1M | Feyenoord Rotterdam |
| 2011-06-22 | €2.5M | Feyenoord Rotterdam |
| 2012-01-10 | €3M | Feyenoord Rotterdam |
| 2012-06-30 | €4M | Feyenoord Rotterdam |
| 2013-01-09 | €5M | Feyenoord Rotterdam |
| 2013-05-28 | €6M | Feyenoord Rotterdam |
| 2014-02-11 | €6M | Feyenoord Rotterdam |
| 2014-08-12 | €10M | SS Lazio |
| 2015-01-07 | €12.5M | SS Lazio |
| 2015-07-01 | €17M | SS Lazio |
| 2016-01-04 | €17M | SS Lazio |
| 2016-07-15 | €16M | SS Lazio |
| 2016-10-14 | €20M | SS Lazio |
| 2017-01-02 | €20M | SS Lazio |
| 2017-06-08 | €27M | SS Lazio |
| 2017-12-29 | €35M | SS Lazio |
| 2018-03-24 | €40M | SS Lazio |
| 2018-06-07 | €40M | SS Lazio |
| 2018-12-20 | €45M | Inter Milan |
| 2019-06-06 | €50M | Inter Milan |
| 2019-12-12 | €60M | Inter Milan |
| 2020-04-08 | €48M | Inter Milan |
| 2020-08-25 | €60M | Inter Milan |
| 2020-12-29 | €55M | Inter Milan |
| 2021-05-27 | €50M | Inter Milan |
| 2021-12-28 | €45M | Inter Milan |
| 2022-03-15 | €35M | Inter Milan |
| 2022-06-07 | €28M | Inter Milan |
| 2022-09-27 | €20M | Inter Milan |
| 2022-11-11 | €15M | Inter Milan |
| 2023-03-21 | €10M | Inter Milan |
| 2023-06-15 | €8M | Inter Milan |
| 2023-12-20 | €8M | Inter Milan |
| 2024-06-05 | €7M | Inter Milan |
| 2024-12-18 | €7M | Inter Milan |
| 2025-06-17 | €5M | Inter Milan |
| 2025-12-23 | €3.5M | Inter Milan |
| 2026-05-29 | €3M | 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
- −0.516
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 29% of the 507 Serie A players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 59% of the 2,065 defenders.
See them in the Explorer →Where Vrij 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
- MkhitaryanCMInter Milan · Serie A€3M
- FreulerCMBologna FC 1909 · Serie A€3M
- GarciaLBUS Sassuolo · Serie A€3M
- ProvedelGKSS Lazio · Serie A€3M
- AlabaCBReal Madrid · defenders€3M
- KeaneCBEverton FC · defenders€3M
- WeiserRBSV Werder Bremen · defenders€3M
- CanCBBorussia Dortmund · defenders€3M
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).