FairValue

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Portrait of Jesper Karlström

Jesper

Karlström

DMSweden · Udinese Calcio

№ 222855Established €5.6M −0.33

Close-up

Image: FootyLogos

Player dossierSerie A

JesperKarlström

DMDefensive MidfieldMidfield

Club
Udinese Calcio
League
Serie A
Nationality
Sweden
Age
30
Height
182 cm
Foot
Right
Valued
29 May 2026

Reading the valuation

The market values Karlström at €4M. Model A, which never saw Karlström during training, estimates €5.6M: the market value is 28% below that estimate.

That is a factor of ×1.40. 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 €5.9M, 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.

▼ −0.33A €5.6M▼ −0.39B €5.9M
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
77
Minutes
6,630
Goals
1
Assists
3
Started
75/77
Min / app
86
Cards
15Y 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 Karlström…

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 €4M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €4MModel A €5.6M

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

Jesper Karlström's percentiles among midfielders: Goals per 90 20th, Assists per 90 24th, Minutes, two years 97th, Starts 97th, Minutes, last 365 days 96th, European club minutes 30th20thGoals24thAssists97thMinutes97thStarts96thRecent30thEurope

Dashed ring: the midfielder median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

6,630 this player2,607 midfielder median97th percentile

451peer deciles · median line · this player ●9,624

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
Jul 2014
Peak
€4M
Jun 2025
Model target
€4M
May 2026
Valuations
31
5 club changes
May 2026€4MUdinese CalcioValuation the model is trained to reproduce

May 2026: €4M, Udinese Calcio. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2014-07-06€100kIF Brommapojkarna
2015-04-11€250kDjurgårdens IF
2015-06-14€400kDjurgårdens IF
2015-11-29€400kDjurgårdens IF
2016-06-17€400kDjurgårdens IF
2016-12-11€350kDjurgårdens IF
2017-06-20€300kDjurgårdens IF
2017-11-20€500kIF Brommapojkarna
2018-06-20€700kDjurgårdens IF
2019-01-16€600kDjurgårdens IF
2019-06-28€800kDjurgårdens IF
2019-11-20€1MDjurgårdens IF
2020-04-08€800kDjurgårdens IF
2020-08-05€1MDjurgårdens IF
2020-12-10€1.5MDjurgårdens IF
2021-01-15€1.5MLech Poznan
2021-05-21€1.5MLech Poznan
2021-12-31€1.8MLech Poznan
2022-04-07€2MLech Poznan
2022-06-14€2.5MLech Poznan
2022-11-16€2.5MLech Poznan
2023-06-09€3MLech Poznan
2023-12-29€2.5MLech Poznan
2024-03-28€2MLech Poznan
2024-06-07€1.8MLech Poznan
2024-10-18€2MUdinese Calcio
2024-12-18€2.5MUdinese Calcio
2025-03-25€3.5MUdinese Calcio
2025-06-17€4MUdinese Calcio
2025-12-23€4MUdinese Calcio
2026-05-29€4MUdinese Calcio

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
−0.334

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 →

Serie A507 players · median €5.5M

Valued above 39% of the 507 Serie A players.

€100k€750k€5M€30M€4MSee them in the Explorer →

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

Valued above 61% of the 1,687 midfielders.

€20k€200k€2M€20M€4MSee them in the Explorer →

Where Karlström 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).