Youri
Regeer
DMNetherlands · Ajax Amsterdam
Player dossierEredivisie
YouriRegeer
DMDefensive MidfieldMidfield
- Club
- Ajax Amsterdam
- League
- Eredivisie
- Nationality
- Netherlands
- Age
- 22
- Height
- 177 cm
- Foot
- Right
- Valued
- 28 May 2026
Reading the valuation
The market values Regeer at €5M. Model A, which never saw Regeer during training, estimates €6.6M: the market value is 24% below that estimate.
That is a factor of ×1.32. 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 €15.8M, 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
- 66
- Minutes
- 4,342
- Goals
- 1
- Assists
- 7
- Started
- 53/66
- Min / app
- 66
- Cards
- 11Y 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 Regeer…
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 €5M
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.
23% this player0% midfielder median89th 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
- €125k
- Aug 2020
- Peak
- €6M
- Dec 2024
- Model target
- €5M
- May 2026
- Valuations
- 18
- 3 club changes
May 2026: €5M, Ajax Amsterdam. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2020-08-12 | €125k | Ajax Amsterdam U21 |
| 2020-10-24 | €900k | Ajax Amsterdam U21 |
| 2020-12-31 | €1.2M | Ajax Amsterdam U21 |
| 2021-10-12 | €1.2M | Ajax Amsterdam U21 |
| 2022-01-12 | €2M | Ajax Amsterdam U21 |
| 2022-06-23 | €2.4M | Ajax Amsterdam U21 |
| 2022-11-11 | €2M | Ajax Amsterdam |
| 2023-04-03 | €1.5M | Ajax Amsterdam |
| 2023-06-23 | €1.3M | Ajax Amsterdam |
| 2023-10-17 | €3M | FC Twente Enschede |
| 2023-12-15 | €3M | FC Twente Enschede |
| 2024-03-18 | €2.5M | FC Twente Enschede |
| 2024-05-31 | €3.5M | FC Twente Enschede |
| 2024-10-14 | €5M | FC Twente Enschede |
| 2024-12-17 | €6M | FC Twente Enschede |
| 2025-05-28 | €6M | Ajax Amsterdam |
| 2025-12-02 | €5M | Ajax Amsterdam |
| 2026-05-28 | €5M | Ajax Amsterdam |
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
- −0.279
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 →Eredivisie425 players · median €1M
Valued above 80% of the 425 Eredivisie players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 65% of the 1,687 midfielders.
See them in the Explorer →Where Regeer appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- WellenreutherGKFeyenoord Rotterdam · Eredivisie€5M
- RosaRBAjax Amsterdam · Eredivisie€5M
- JarosGKAjax Amsterdam · Eredivisie€5M
- MeerveldAMSC Heerenveen · Eredivisie€5M
- KokeCMAtlético de Madrid · midfielders€5M
- VanakenAMClub Brugge KV · midfielders€5M
- NørgaardDMArsenal FC · midfielders€5M
- Ward-ProwseCMBurnley FC · midfielders€5M
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).