Jonathan
Amon
LWUnited States · Vejle Boldklub
Player dossierSuperliga
JonathanAmon
LWLeft WingerAttack
- Club
- Vejle Boldklub
- League
- Superliga
- Nationality
- United States
- Age
- 27
- Height
- 175 cm
- Foot
- Right
- Valued
- 25 May 2026
SuperligaReading the valuation
The market values Amon at €400k. Model A, which never saw Amon during training, estimates €491k: the market value is 18% below that estimate.
That is a factor of ×1.23. 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 €952k, 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
- 34
- Minutes
- 1,808
- Goals
- 4
- Assists
- 2
- Started
- 20/34
- Min / app
- 53
- 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 Amon…
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 €400k
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.
59% this player59% attacker median50th 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
- €250k
- Dec 2017
- Peak
- €700k
- Jun 2019
- Model target
- €400k
- May 2026
- Valuations
- 18
- 3 club changes
May 2026: €400k, Vejle Boldklub. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2017-12-18 | €250k | FC Nordsjaelland U19 |
| 2018-06-02 | €300k | FC Nordsjaelland U19 |
| 2018-12-21 | €450k | FC Nordsjaelland |
| 2019-06-08 | €700k | FC Nordsjaelland |
| 2019-12-22 | €700k | FC Nordsjaelland |
| 2020-04-08 | €625k | FC Nordsjaelland |
| 2020-07-31 | €500k | FC Nordsjaelland |
| 2020-12-23 | €400k | FC Nordsjaelland |
| 2021-06-04 | €400k | FC Nordsjaelland |
| 2021-12-28 | €300k | FC Nordsjaelland |
| 2022-06-20 | €300k | FC Nordsjaelland |
| 2022-12-22 | €300k | FC Nordsjaelland |
| 2023-12-21 | €300k | Lyngby Boldklub |
| 2024-06-10 | €500k | Lyngby Boldklub |
| 2024-12-09 | €700k | Lyngby Boldklub |
| 2025-06-16 | €600k | Lyngby Boldklub |
| 2025-12-15 | €500k | Vejle Boldklub |
| 2026-05-25 | €400k | Vejle Boldklub |
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
- −0.204
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 17% of the 256 Superliga players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 11% of the 1,583 attackers.
See them in the Explorer →Where Amon appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- WassCMBröndby IF · Superliga€400k
- HjulsagerCMVejle Boldklub · Superliga€400k
- MucolliLWFC Fredericia · Superliga€400k
- DuelundLWVejle Boldklub · Superliga€400k
- SansoneLWUS Lecce · attackers€400k
- LapadulaCFSpezia Calcio · attackers€400k
- RosaLWPanetolikos · attackers€400k
- IljinCFFC Sochi · attackers€400k
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).