Marius
Marin
DMRomania · Pisa Sporting Club
Player dossierSerie A
MariusMarin
DMDefensive MidfieldMidfield
- Club
- Pisa Sporting Club
- League
- Serie A
- Nationality
- Romania
- Age
- 27
- Height
- 180 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Marin at €2.8M. Model A, which never saw Marin during training, estimates €1.8M: the market value is 56% above that estimate.
That is a factor of ×1.56. 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 €742k, 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
- 24
- Minutes
- 1,359
- Goals
- 0
- Assists
- 0
- Started
- 19/24
- Min / app
- 57
- Cards
- 8Y 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 Marin…
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 €2.8M
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)
Starts
Share of appearances started rather than entered from the bench.
79% this player69% midfielder median69th 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
- Jul 2015
- Peak
- €3M
- Dec 2021
- Model target
- €2.8M
- May 2026
- Valuations
- 23
- 4 club changes
May 2026: €2.8M, Pisa Sporting Club. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2015-07-04 | €50k | ACS Poli Timisoara U19 (2012 - 2021) |
| 2016-11-14 | €50k | Sassuolo Primavera |
| 2017-06-26 | €75k | Sassuolo Primavera |
| 2017-12-20 | €125k | US Catanzaro |
| 2018-06-21 | €175k | US Catanzaro |
| 2018-12-13 | €200k | AC Pisa 1909 |
| 2019-06-19 | €200k | AC Pisa 1909 |
| 2019-12-30 | €300k | AC Pisa 1909 |
| 2020-08-21 | €500k | AC Pisa 1909 |
| 2021-02-22 | €1M | AC Pisa 1909 |
| 2021-06-24 | €1.5M | AC Pisa 1909 |
| 2021-12-29 | €3M | Pisa Sporting Club |
| 2022-06-06 | €3M | Pisa Sporting Club |
| 2022-12-22 | €3M | Pisa Sporting Club |
| 2023-06-12 | €2.4M | Pisa Sporting Club |
| 2023-10-11 | €2M | Pisa Sporting Club |
| 2023-12-27 | €1.6M | Pisa Sporting Club |
| 2024-06-03 | €1.6M | Pisa Sporting Club |
| 2024-10-15 | €2M | Pisa Sporting Club |
| 2024-12-23 | €3M | Pisa Sporting Club |
| 2025-06-02 | €3M | Pisa Sporting Club |
| 2025-12-23 | €3M | Pisa Sporting Club |
| 2026-05-29 | €2.8M | Pisa Sporting Club |
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
- +0.442
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 28% of the 507 Serie A players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 55% of the 1,687 midfielders.
See them in the Explorer →Where Marin 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
- ThorsbyCMUS Cremonese · Serie A€2.8M
- AuderoGKUS Cremonese · Serie A€2.8M
- SerdarCMHellas Verona · Serie A€2.8M
- EbosseCBTorino FC · Serie A€2.8M
- LaciCMCaykur Rizespor · midfielders€2.8M
- PetrovCMBaltika Kaliningrad · midfielders€2.8M
- ShchetininAMFC Rostov · midfielders€2.8M
- AasgaardAMRangers FC · midfielders€2.8M
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).