Piotr
Zielinski
CMPoland · Inter Milan
Close-up
Image: FootyLogos
Player dossierSerie A
PiotrZielinski
CMCentral MidfieldMidfield
- Club
- Inter Milan
- League
- Serie A
- Nationality
- Poland
- Age
- 32
- Height
- 180 cm
- Foot
- Both
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Zielinski at €10M. Model A, which never saw Zielinski during training, estimates €9.9M: the market value is 1% above that estimate.
That is a factor of ×1.01. 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 €5.7M, 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
- 87
- Minutes
- 4,663
- Goals
- 9
- Assists
- 7
- Started
- 48/87
- Min / app
- 54
- 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 Zielinski…
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 €10M
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.
26% this player0% midfielder median92nd 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
- May 2011
- Peak
- €50M
- May 2021
- Model target
- €10M
- May 2026
- Valuations
- 38
- 6 club changes
May 2026: €10M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2011-05-30 | €50k | Zaglebie Lubin II |
| 2011-09-25 | €100k | Udinese Primavera |
| 2013-01-15 | €300k | Udinese Calcio |
| 2013-06-19 | €3M | Udinese Calcio |
| 2014-01-07 | €3M | Udinese Calcio |
| 2014-07-01 | €2.5M | Udinese Calcio |
| 2015-01-07 | €2.5M | FC Empoli |
| 2015-07-01 | €2.5M | FC Empoli |
| 2016-01-04 | €4M | FC Empoli |
| 2016-04-01 | €7M | FC Empoli |
| 2016-06-01 | €12M | FC Empoli |
| 2016-07-15 | €12M | Udinese Calcio |
| 2016-10-14 | €14M | SSC Napoli |
| 2017-01-02 | €16M | SSC Napoli |
| 2017-06-08 | €20M | SSC Napoli |
| 2017-12-29 | €25M | SSC Napoli |
| 2018-06-07 | €32M | SSC Napoli |
| 2018-10-12 | €40M | SSC Napoli |
| 2018-12-20 | €40M | SSC Napoli |
| 2019-06-06 | €40M | SSC Napoli |
| 2019-12-12 | €40M | SSC Napoli |
| 2020-04-08 | €32M | SSC Napoli |
| 2020-08-25 | €35M | SSC Napoli |
| 2020-12-29 | €40M | SSC Napoli |
| 2021-03-23 | €46M | SSC Napoli |
| 2021-05-31 | €50M | SSC Napoli |
| 2021-12-28 | €50M | SSC Napoli |
| 2022-06-07 | €40M | SSC Napoli |
| 2022-11-11 | €40M | SSC Napoli |
| 2023-06-15 | €35M | SSC Napoli |
| 2023-12-20 | €30M | SSC Napoli |
| 2024-03-12 | €25M | SSC Napoli |
| 2024-06-05 | €22M | SSC Napoli |
| 2024-12-18 | €18M | Inter Milan |
| 2025-03-25 | €14M | Inter Milan |
| 2025-06-17 | €10M | Inter Milan |
| 2025-12-23 | €10M | Inter Milan |
| 2026-05-29 | €10M | Inter Milan |
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
- +0.009
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 65% of the 507 Serie A players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 78% of the 1,687 midfielders.
See them in the Explorer →Where Zielinski 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
- LobotkaDMSSC Napoli · Serie A€10M
- RrahmaniCBSSC Napoli · Serie A€10M
- VlašićAMTorino FC · Serie A€10M
- GregorioGKJuventus FC · Serie A€10M
- KovacicCMManchester City · midfielders€10M
- EggesteinCMSC Freiburg · midfielders€10M
- TolissoCMOlympique Lyon · midfielders€10M
- SchlagerCMRB Leipzig · midfielders€10M
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).