Stephen
Acquah
CBGhana · FC Nordsjaelland
Player dossierSuperliga
StephenAcquah
CBCentre-BackDefender
- Club
- FC Nordsjaelland
- League
- Superliga
- Nationality
- Ghana
- Age
- 20
- Height
- 186 cm
- Foot
- Right
- Valued
- 25 May 2026
SuperligaReading the valuation
The market values Acquah at €500k. Model A, which never saw Acquah during training, estimates €750k: the market value is 33% below that estimate.
That is a factor of ×1.50. 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 €968k, 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
- 753
- Goals
- 0
- Assists
- 0
- Started
- 5/18
- Min / app
- 42
- 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 Acquah…
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 €500k
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.
0% this player0% defender median30th 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
- €100k
- Jun 2025
- Peak
- €500k
- Dec 2025
- Model target
- €500k
- May 2026
- Valuations
- 3
- 0 club changes
May 2026: €500k, FC Nordsjaelland. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2025-06-16 | €100k | FC Nordsjaelland |
| 2025-12-15 | €500k | FC Nordsjaelland |
| 2026-05-25 | €500k | FC Nordsjaelland |
Audit context group-level, not about this player
- Audit group
- non-UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- −0.406
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 →Superliga256 players · median €800k
Valued above 25% of the 256 Superliga players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 19% of the 2,065 defenders.
See them in the Explorer →Where Acquah appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- DelaneyCMFC Copenhagen · Superliga€500k
- IzzoGKRanders FC · Superliga€500k
- BruggenCBVejle Boldklub · Superliga€500k
- SalquistCBFC Nordsjaelland · Superliga€500k
- DanteCBOGC Nice · defenders€500k
- SilvaCBFC Porto · defenders€500k
- VidaCBAEK Athens · defenders€500k
- TavernierRBRangers FC · defenders€500k
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).