Bouke
Boersma
CFNetherlands · KV Mechelen
Player dossierPro League
BoukeBoersma
CFCentre-ForwardAttack
- Club
- KV Mechelen
- League
- Pro League
- Nationality
- Netherlands
- Age
- 20
- Height
- –
- Foot
- Right
- Valued
- 4 Jun 2026
Pro LeagueReading the valuation
The market values Boersma at €2.5M. Model A, which never saw Boersma during training, estimates €3.2M: the market value is 22% below that estimate.
That is a factor of ×1.29. 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 €1.7M, 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
- 18
- Minutes
- 1,356
- Goals
- 3
- Assists
- 3
- Started
- 15/18
- Min / app
- 75
- Cards
- 1Y 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 Boersma…
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 1,583 attackers
Dashed ring: the attacker median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
83% this player59% attacker median87th 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
- €225k
- Oct 2025
- Peak
- €2.5M
- Jun 2026
- Model target
- €2.5M
- Jun 2026
- Valuations
- 4
- 1 club change
Jun 2026: €2.5M, KV Mechelen. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2025-10-14 | €225k | De Graafschap Doetinchem |
| 2025-12-16 | €450k | De Graafschap Doetinchem |
| 2026-03-13 | €1M | KV Mechelen |
| 2026-06-04 | €2.5M | KV Mechelen |
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
- −0.252
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 →Attackers, all leagues1,583 players · median €2.5M
Valued above 48% of the 1,583 attackers.
See them in the Explorer →Where Boersma 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
- KramaricSSTSG 1899 Hoffenheim · attackers€2.5M
- AubameyangCFOlympique Marseille · attackers€2.5M
- ZapataCFTorino FC · attackers€2.5M
- PléaCFPSV Eindhoven · attackers€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).