FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Joakim

Maehle

LBDenmark · VfL Wolfsburg

№ 369674Established €4.3M +0.48

Player dossierBundesliga

JoakimMaehle

LBLeft-BackDefender

Club
VfL Wolfsburg
League
Bundesliga
Nationality
Denmark
Age
29
Height
185 cm
Foot
Right
Valued
27 May 2026

Reading the valuation

The market values Maehle at €7M. Model A, which never saw Maehle during training, estimates €4.3M: the market value is 61% above that estimate.

That is a factor of ×1.61. 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 €1.6M, 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.

▲ +0.48A €4.3M▲ +1.51B €1.6M
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
49
Minutes
3,818
Goals
4
Assists
6
Started
43/49
Min / app
78
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 Maehle…

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 €7M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €7MModel A €4.3M

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 2,065 defenders

Joakim Maehle's percentiles among defenders: Goals per 90 85th, Assists per 90 86th, Minutes, two years 67th, Starts 63rd, Minutes, last 365 days 39th, European club minutes 30th85thGoals86thAssists67thMinutes63rdStarts39thRecent30thEurope

Dashed ring: the defender median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.14 this player0.04 defender median86th percentile

0.00peer deciles · median line · this player ●0.58

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
Aug 2016
Peak
€19M
Jul 2021
Model target
€7M
May 2026
Valuations
29
3 club changes
May 2026€7MVfL WolfsburgValuation the model is trained to reproduce

May 2026: €7M, VfL Wolfsburg. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2016-08-12€50kAalborg BK
2016-12-12€250kAalborg BK
2017-03-27€350kAalborg BK
2017-06-21€1MAalborg BK
2018-01-09€1.5MKRC Genk
2018-06-03€1.5MKRC Genk
2018-09-11€2MKRC Genk
2018-12-27€4MKRC Genk
2019-03-04€8MKRC Genk
2019-06-10€9MKRC Genk
2019-12-13€9MKRC Genk
2020-03-30€10MKRC Genk
2020-04-08€8MKRC Genk
2020-10-16€10MKRC Genk
2021-01-04€11MAtalanta BC
2021-05-26€13MAtalanta BC
2021-07-15€19MAtalanta BC
2021-12-28€17MAtalanta BC
2022-06-07€14MAtalanta BC
2022-11-11€14MAtalanta BC
2023-06-15€14MAtalanta BC
2023-12-14€14MVfL Wolfsburg
2024-05-29€14MVfL Wolfsburg
2024-12-20€14MVfL Wolfsburg
2025-06-05€14MVfL Wolfsburg
2025-10-14€12MVfL Wolfsburg
2025-12-19€9MVfL Wolfsburg
2026-03-20€7MVfL Wolfsburg
2026-05-27€7MVfL Wolfsburg

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
+0.478

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 →

Bundesliga451 players · median €5M

Valued above 56% of the 451 Bundesliga players.

€300k€2M€15M€100M€7MSee them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 76% of the 2,065 defenders.

€20k€200k€2M€20M€7MSee them in the Explorer →

Where Maehle 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).