Lucas
Hey
CBDenmark · RSC Anderlecht
Player dossierPro League
LucasHey
CBCentre-BackDefender
- Club
- RSC Anderlecht
- League
- Pro League
- Nationality
- Denmark
- Age
- 23
- Height
- 189 cm
- Foot
- Right
- Valued
- 4 Jun 2026
Pro LeagueReading the valuation
The market values Hey at €2.5M. Model A, which never saw Hey during training, estimates €6.5M: the market value is 62% below that estimate.
That is a factor of ×2.61. 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 €11.9M, 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
- 67
- Minutes
- 5,536
- Goals
- 1
- Assists
- 2
- Started
- 60/67
- Min / app
- 83
- Cards
- 12Y 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 Hey…
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 €2.5M
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 2,065 defenders
Dashed ring: the defender median (50th percentile)
Minutes, last 365 days
Club minutes in the final year of the window: recent involvement, or the absence of it.
3,084 this player1,687 defender median90th 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
- Jun 2021
- Peak
- €5M
- Jun 2025
- Model target
- €2.5M
- Jun 2026
- Valuations
- 13
- 3 club changes
Jun 2026: €2.5M, RSC Anderlecht. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-06-04 | €50k | Lyngby Boldklub U19 |
| 2022-09-13 | €100k | Lyngby Boldklub |
| 2022-12-22 | €250k | Lyngby Boldklub |
| 2023-06-26 | €1.5M | Lyngby Boldklub |
| 2023-09-19 | €2M | FC Nordsjaelland |
| 2023-12-21 | €3M | FC Nordsjaelland |
| 2024-06-10 | €3M | FC Nordsjaelland |
| 2024-12-09 | €4M | FC Nordsjaelland |
| 2025-06-12 | €5M | RSC Anderlecht |
| 2025-10-01 | €4.5M | RSC Anderlecht |
| 2025-12-10 | €4.5M | RSC Anderlecht |
| 2026-03-13 | €3.5M | RSC Anderlecht |
| 2026-06-04 | €2.5M | RSC Anderlecht |
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
- −0.961
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 →Pro League350 players · median €1.8M
Valued above 60% of the 350 Pro League players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 54% of the 2,065 defenders.
See them in the Explorer →Where Hey appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- RoefGKKAA Gent · Pro League€2.5M
- LopesCMKAA Gent · Pro League€2.5M
- NsimbaCFFCV Dender EH · Pro League€2.5M
- SardellaRBRSC Anderlecht · Pro League€2.5M
- GraditCBRC Lens · defenders€2.5M
- MainkaCB1.FC Heidenheim 1846 · defenders€2.5M
- CoufalRBTSG 1899 Hoffenheim · defenders€2.5M
- StarkCBSV Werder Bremen · defenders€2.5M
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).