FairValue

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Jens

Jønsson

DMDenmark · AEK Athens

№ 148355Emerging €804k −0.01

Player dossierSuper League

JensJønsson

DMDefensive MidfieldMidfield

Club
AEK Athens
League
Super League
Nationality
Denmark
Age
33
Height
182 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Jønsson at €800k. Model A, which never saw Jønsson during training, estimates €804k: the market value is 1% below that estimate.

That is a factor of ×1.01. 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 €540k, 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.

▼ −0.01A €804k▲ +0.39B €540k
Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).
Apps
22
Minutes
1,392
Goals
1
Assists
0
Started
15/22
Min / app
63
Cards
8Y 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 Jønsson…

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 €800k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €800kModel A €804k

Asking 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 1,687 midfielders

Jens Jønsson's percentiles among midfielders: Goals per 90 41st, Assists per 90 8th, Minutes, two years 22nd, Starts 48th, Minutes, last 365 days 2nd, European club minutes 74th41stGoals8thAssists22ndMinutes48thStarts2ndRecent74thEurope

Dashed ring: the midfielder median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

12% this player0% midfielder median74th percentile

0%peer deciles · median line · this player ●85%

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 2011
Peak
€4M
Jun 2021
Model target
€800k
Jun 2026
Valuations
32
4 club changes
Jun 2026€800kAEK AthensValuation the model is trained to reproduce

Jun 2026: €800k, AEK Athens. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2011-07-25€50kAarhus GF/Viby IF U19
2012-07-21€100kAarhus GF
2013-01-17€250kAarhus GF
2013-06-17€350kAarhus GF
2014-08-31€400kAarhus GF
2014-12-18€400kAarhus GF
2015-09-02€600kAarhus GF
2016-01-21€600kAarhus GF
2016-08-12€500kAarhus GF
2017-01-10€750kKonyaspor
2017-06-09€1MKonyaspor
2018-02-12€900kKonyaspor
2018-05-29€800kKonyaspor
2019-01-04€1MKonyaspor
2019-06-04€1MKonyaspor
2019-10-04€1.3MKonyaspor
2020-01-03€1.5MKonyaspor
2020-04-08€1.2MKonyaspor
2020-08-04€1.5MKonyaspor
2020-10-08€1.5MCádiz CF
2021-01-05€1.8MCádiz CF
2021-06-10€4MCádiz CF
2021-12-30€4MCádiz CF
2022-06-03€4MCádiz CF
2022-11-07€3MAEK Athens
2023-05-22€3MAEK Athens
2023-12-20€3MAEK Athens
2024-05-30€2.5MAEK Athens
2024-12-18€2MAEK Athens
2025-05-23€1.8MAEK Athens
2025-12-12€1.2MAEK Athens
2026-06-04€800kAEK Athens

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
−0.005

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 →

Super League356 players · median €600k

Valued above 60% of the 356 Super League players.

€20k€150k€1M€7.5M€800kSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 27% of the 1,687 midfielders.

€20k€200k€2M€20M€800kSee them in the Explorer →

Where Jønsson appears

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

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).