Oskar
Sivertsen
LWNorway · Go Ahead Eagles
Player dossierEredivisie
OskarSivertsen
LWLeft WingerAttack
- Club
- Go Ahead Eagles
- League
- Eredivisie
- Nationality
- Norway
- Age
- 22
- Height
- 177 cm
- Foot
- Right
- Valued
- 28 May 2026
EredivisieReading the valuation
The market values Sivertsen at €450k. Model A, which never saw Sivertsen during training, estimates €639k: the market value is 30% below that estimate.
That is a factor of ×1.42. 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 €1.4M, 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
- 28
- Minutes
- 734
- Goals
- 0
- Assists
- 1
- Started
- 5/28
- Min / app
- 26
- 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 Sivertsen…
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 €450k
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)
European club minutes
Share of minutes played in UEFA club competitions.
27% this player0% attacker median92nd 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
- Jul 2020
- Peak
- €1.5M
- Dec 2024
- Model target
- €450k
- May 2026
- Valuations
- 14
- 1 club change
May 2026: €450k, Go Ahead Eagles. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2020-07-25 | €50k | Kristiansund BK |
| 2020-12-31 | €100k | Kristiansund BK |
| 2022-01-03 | €100k | Kristiansund BK |
| 2022-12-09 | €150k | Kristiansund BK |
| 2023-06-29 | €250k | Kristiansund BK |
| 2023-12-13 | €450k | Kristiansund BK |
| 2024-06-12 | €1M | Kristiansund BK |
| 2024-09-17 | €1.2M | Kristiansund BK |
| 2024-12-12 | €1.5M | Kristiansund BK |
| 2025-05-28 | €1.3M | Go Ahead Eagles |
| 2025-10-02 | €850k | Go Ahead Eagles |
| 2025-12-02 | €700k | Go Ahead Eagles |
| 2026-03-11 | €500k | Go Ahead Eagles |
| 2026-05-28 | €450k | Go Ahead Eagles |
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
- −0.351
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 22% of the 425 Eredivisie players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 14% of the 1,583 attackers.
See them in the Explorer →Where Sivertsen appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- PetersonLWFortuna Sittard · Eredivisie€450k
- BakkerCBSC Telstar · Eredivisie€450k
- MiraniCBHeracles Almelo · Eredivisie€450k
- HardeveldLMSC Telstar · Eredivisie€450k
- OzegovicCFLevadiakos · attackers€450k
- MarkovCFUral Yekaterinburg · attackers€450k
- AlshinLWFakel Voronezh · attackers€450k
- MirzovLWArsenal Tula · attackers€450k
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).