Gustav
Marcussen
LWDenmark · FC Fredericia
Player dossierSuperliga
GustavMarcussen
LWLeft WingerAttack
- Club
- FC Fredericia
- League
- Superliga
- Nationality
- Denmark
- Age
- 27
- Height
- 178 cm
- Foot
- Right
- Valued
- 25 May 2026
Reading the valuation
The market values Marcussen at €750k. Model A, which never saw Marcussen during training, estimates €726k: the market value is 3% above that estimate.
That is a factor of ×1.03. 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 €1.1M, 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
- 24
- Minutes
- 1,804
- Goals
- 5
- Assists
- 2
- Started
- 21/24
- 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 Marcussen…
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 €750k
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.
88% this player59% attacker median91st 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 2017
- Peak
- €750k
- Dec 2025
- Model target
- €750k
- May 2026
- Valuations
- 23
- 5 club changes
May 2026: €750k, FC Fredericia. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2017-06-15 | €100k | Lyngby Boldklub U19 |
| 2017-12-18 | €150k | Lyngby Boldklub |
| 2018-06-02 | €200k | Lyngby Boldklub |
| 2018-12-21 | €250k | Lyngby Boldklub |
| 2019-06-24 | €350k | Lyngby Boldklub |
| 2019-09-09 | €250k | Lyngby Boldklub |
| 2019-12-22 | €450k | Lyngby Boldklub |
| 2020-04-08 | €400k | Lyngby Boldklub |
| 2020-07-31 | €500k | Lyngby Boldklub |
| 2020-11-11 | €450k | KFC Uerdingen 05 |
| 2021-01-20 | €400k | KFC Uerdingen 05 |
| 2021-03-26 | €350k | KFC Uerdingen 05 |
| 2021-06-14 | €300k | KFC Uerdingen 05 |
| 2021-12-28 | €250k | Silkeborg IF |
| 2022-06-20 | €250k | BK Fremad Amager |
| 2022-12-22 | €250k | BK Fremad Amager |
| 2023-06-26 | €250k | BK Fremad Amager |
| 2023-12-21 | €250k | FC Fredericia |
| 2024-06-18 | €250k | FC Fredericia |
| 2024-12-09 | €500k | FC Fredericia |
| 2025-06-16 | €650k | FC Fredericia |
| 2025-12-15 | €750k | FC Fredericia |
| 2026-05-25 | €750k | FC Fredericia |
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
- +0.033
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 43% of the 256 Superliga players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 24% of the 1,583 attackers.
See them in the Explorer →Where Marcussen appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- BruusRBAC Horsens · Superliga€750k
- GrotCFOdense Boldklub · Superliga€750k
- GundelundRBVejle Boldklub · Superliga€750k
- JassonRWAalborg BK · Superliga€750k
- HofmannCFVfL Bochum · attackers€750k
- HanssonLWExcelsior Rotterdam · attackers€750k
- WlodarczykCFExcelsior Rotterdam · attackers€750k
- BabaevLWDynamo Moscow · attackers€750k
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).