Sebastian
Musiolik
CFPoland · AE Kifisia
Player dossierSuper League
SebastianMusiolik
CFCentre-ForwardAttack
- Club
- AE Kifisia
- League
- Super League
- Nationality
- Poland
- Age
- 30
- Height
- 193 cm
- Foot
- Left
- Valued
- 4 Jun 2026
Super LeagueReading the valuation
The market values Musiolik at €175k. Model A, which never saw Musiolik during training, estimates €635k: the market value is 72% below that estimate.
That is a factor of ×3.63. 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 €899k, 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
- 17
- Minutes
- 821
- Goals
- 2
- Assists
- 0
- Started
- 8/17
- Min / app
- 48
- 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 Musiolik…
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 €175k
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)
European club minutes
Share of minutes played in UEFA club competitions.
42% this player0% attacker median99th 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
- €50k
- Jun 2013
- Peak
- €650k
- Feb 2021
- Model target
- €175k
- Jun 2026
- Valuations
- 26
- 7 club changes
Jun 2026: €175k, AE Kifisia. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2013-06-20 | €50k | Energetyk ROW Rybnik |
| 2013-08-19 | €50k | Energetyk ROW Rybnik |
| 2015-03-24 | €100k | Energetyk ROW Rybnik |
| 2015-06-30 | €150k | Energetyk ROW Rybnik |
| 2016-01-10 | €100k | Piast Gliwice |
| 2016-07-24 | €100k | Piast Gliwice |
| 2017-07-05 | €75k | Piast Gliwice |
| 2019-02-21 | €75k | Raków Częstochowa |
| 2019-06-29 | €350k | Raków Częstochowa |
| 2020-01-15 | €350k | Raków Częstochowa |
| 2020-04-08 | €300k | Raków Częstochowa |
| 2020-08-18 | €550k | Raków Częstochowa |
| 2021-02-22 | €650k | Pordenone Calcio |
| 2021-06-24 | €600k | Pordenone Calcio |
| 2021-12-31 | €400k | Raków Częstochowa |
| 2022-06-14 | €400k | Raków Częstochowa |
| 2022-11-16 | €250k | Raków Częstochowa |
| 2023-06-09 | €200k | Raków Częstochowa |
| 2023-10-06 | €350k | Górnik Zabrze |
| 2023-12-29 | €450k | Górnik Zabrze |
| 2024-06-07 | €450k | Górnik Zabrze |
| 2024-12-09 | €450k | Slask Wroclaw |
| 2025-04-03 | €300k | Slask Wroclaw |
| 2025-06-06 | €200k | Slask Wroclaw |
| 2025-12-12 | €200k | AE Kifisia |
| 2026-06-04 | €175k | AE Kifisia |
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
- −1.289
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 8% of the 356 Super League players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 4% of the 1,583 attackers.
See them in the Explorer →Where Musiolik appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- TriantafyllopoulosCBAsteras Aktor · Super League€175k
- TzandarisDMAsteras Aktor · Super League€175k
- DentakisRBAthens Kallithea · Super League€175k
- GaravelisGKNiki Volou · Super League€175k
- SofianosRWPanserraikos · attackers€175k
- DemirbağCFPendikspor · attackers€175k
- WolfswinkelCFFC Twente Enschede · attackers€200k
- MortensenCFAarhus GF · attackers€200k
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).