Jakub
Piotrowski
CMPoland · Udinese Calcio
Player dossierSerie A
JakubPiotrowski
CMCentral MidfieldMidfield
- Club
- Udinese Calcio
- League
- Serie A
- Nationality
- Poland
- Age
- 28
- Height
- 188 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Piotrowski at €4.5M. Model A, which never saw Piotrowski during training, estimates €5.6M: the market value is 20% below that estimate.
That is a factor of ×1.25. 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 €4.9M, 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.
- Apps
- 39
- Minutes
- 2,187
- Goals
- 2
- Assists
- 1
- Started
- 25/39
- Min / app
- 56
- Cards
- 3Y 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 Piotrowski…
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 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 1,687 midfielders
Dashed ring: the midfielder median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
17% this player0% midfielder median80th 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
- Jan 2016
- Peak
- €5M
- Jun 2024
- Model target
- €4.5M
- May 2026
- Valuations
- 28
- 7 club changes
May 2026: €4.5M, Udinese Calcio. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2016-01-10 | €50k | Pogon Szczecin |
| 2016-03-27 | €50k | Pogon Szczecin |
| 2016-07-24 | €100k | Pogon Szczecin |
| 2017-01-21 | €150k | Pogon Szczecin |
| 2017-03-02 | €150k | Stomil Olsztyn |
| 2017-07-05 | €100k | Pogon Szczecin |
| 2018-01-16 | €300k | Pogon Szczecin |
| 2018-07-03 | €2M | KRC Genk |
| 2018-12-27 | €2M | KRC Genk |
| 2019-06-10 | €1.8M | KRC Genk |
| 2019-12-13 | €1.6M | KRC Genk |
| 2020-03-30 | €1.2M | KVRS Waasland - SK Beveren |
| 2020-04-08 | €950k | KVRS Waasland - SK Beveren |
| 2021-02-08 | €700k | Fortuna Düsseldorf |
| 2021-06-16 | €700k | Fortuna Düsseldorf |
| 2021-12-15 | €700k | Fortuna Düsseldorf |
| 2022-03-23 | €800k | Fortuna Düsseldorf |
| 2022-06-16 | €800k | Fortuna Düsseldorf |
| 2022-09-07 | €1.3M | Ludogorets Razgrad |
| 2022-11-28 | €1.5M | Ludogorets Razgrad |
| 2023-06-05 | €1.5M | Ludogorets Razgrad |
| 2023-09-15 | €2M | Ludogorets Razgrad |
| 2023-12-20 | €2.5M | Ludogorets Razgrad |
| 2024-06-03 | €5M | Ludogorets Razgrad |
| 2024-12-02 | €4.5M | Ludogorets Razgrad |
| 2025-06-02 | €4.5M | Ludogorets Razgrad |
| 2025-12-23 | €4.5M | Udinese Calcio |
| 2026-05-29 | €4.5M | Udinese 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
- −0.226
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 42% of the 507 Serie A players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 64% of the 1,687 midfielders.
See them in the Explorer →Where Piotrowski appears
- TerminalSerie A in the Player Explorer
- TerminalSerie A on the League Landscape
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- AngeliñoLBAS Roma · Serie A€4.5M
- TsimikasLBAS Roma · Serie A€4.5M
- PellegriniLBSS Lazio · Serie A€4.5M
- CanestrelliCBPisa Sporting Club · Serie A€4.5M
- LeminaDMGalatasaray · midfielders€4.5M
- FredCMFenerbahce · midfielders€4.5M
- BentalebDMLOSC Lille · midfielders€4.5M
- Lees-MelouDMParis FC · midfielders€4.5M
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).