FairValue

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Karol

Świderski

CFPoland · Panathinaikos

№ 330126Established €2.2M +0.71

Player dossierSuper League

KarolŚwiderski

CFCentre-ForwardAttack

Club
Panathinaikos
League
Super League
Nationality
Poland
Age
29
Height
184 cm
Foot
Left
Valued
4 Jun 2026

Reading the valuation

The market values Świderski at €4.5M. Model A, which never saw Świderski during training, estimates €2.2M: the market value is 104% above that estimate.

That is a factor of ×2.04. 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 €3.2M, closer to the market here, although it is usually further off (typical miss ×2.07).

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▲ +0.71A €2.2M▲ +0.33B €3.2M
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
48
Minutes
2,314
Goals
10
Assists
5
Started
26/48
Min / app
48
Cards
10Y 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 Świderski…

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 €4.5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €4.5MModel A €2.2M

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 1,583 attackers

Karol Świderski's percentiles among attackers: Goals per 90 75th, Assists per 90 68th, Minutes, two years 52nd, Starts 42nd, Minutes, last 365 days 74th, European club minutes 96th75thGoals68thAssists52ndMinutes42ndStarts74thRecent96thEurope

Dashed ring: the attacker median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

34% this player0% attacker median96th percentile

0%peer deciles · median line · this player ●100%

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 2014
Peak
€6M
Nov 2021
Model target
€4.5M
Jun 2026
Valuations
29
5 club changes
Jun 2026€4.5MPanathinaikosValuation the model is trained to reproduce

Jun 2026: €4.5M, Panathinaikos. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2014-07-21€50kJagiellonia Bialystok
2015-03-05€50kJagiellonia Bialystok
2015-06-30€200kJagiellonia Bialystok
2016-01-10€350kJagiellonia Bialystok
2016-03-28€425kJagiellonia Bialystok
2016-07-24€750kJagiellonia Bialystok
2017-01-21€1MJagiellonia Bialystok
2017-07-05€750kJagiellonia Bialystok
2018-01-16€650kJagiellonia Bialystok
2018-07-03€750kJagiellonia Bialystok
2019-02-07€2MPAOK Thessaloniki
2019-05-21€3MPAOK Thessaloniki
2019-12-18€5MPAOK Thessaloniki
2020-04-08€4MPAOK Thessaloniki
2020-08-04€4MPAOK Thessaloniki
2021-02-12€4MPAOK Thessaloniki
2021-05-31€5MPAOK Thessaloniki
2021-11-01€6MPAOK Thessaloniki
2022-04-01€5MCharlotte FC
2022-08-18€5MCharlotte FC
2022-11-08€5MCharlotte FC
2023-08-22€6MCharlotte FC
2023-12-18€6MCharlotte FC
2024-06-05€5MHellas Verona
2024-12-12€5MCharlotte FC
2025-03-14€4.5MPanathinaikos
2025-05-23€4.5MPanathinaikos
2025-12-12€5MPanathinaikos
2026-06-04€4.5MPanathinaikos

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
+0.714

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 92% of the 356 Super League players.

€20k€150k€1M€7.5M€4.5MSee them in the Explorer →

Attackers, all leagues1,583 players · median €2.5M

Valued above 63% of the 1,583 attackers.

€20k€300k€5M€75M€4.5MSee them in the Explorer →

Where Świderski 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).