Wojciech
Szczesny
GKPoland · FC Barcelona
Image: FootyLogos
Player dossierLaLiga
WojciechSzczesny
GKGoalkeeperGoalkeeper
- Club
- FC Barcelona
- League
- LaLiga
- Nationality
- Poland
- Age
- 36
- Height
- 195 cm
- Foot
- Right
- Valued
- 5 Jun 2026
LaLigaReading the valuation
The market values Szczesny at €800k. Model A, which never saw Szczesny during training, estimates €1.7M: the market value is 53% below that estimate.
That is a factor of ×2.13. 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 €868k, 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
- 42
- Minutes
- 3,724
- Started
- 41/42
- Min / app
- 89
- Cards
- 1Y 1R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Szczesny…
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 €800k
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
28% this player0% goalkeeper 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
- €100k
- Mar 2007
- Peak
- €40M
- Dec 2019
- Model target
- €800k
- Jun 2026
- Valuations
- 43
- 6 club changes
Jun 2026: €800k, FC Barcelona. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2007-03-09 | €100k | Arsenal FC U18 |
| 2008-03-19 | €100k | Arsenal FC U18 |
| 2009-08-06 | €50k | Arsenal FC |
| 2009-11-23 | €400k | Brentford FC |
| 2010-04-21 | €475k | Brentford FC |
| 2010-09-25 | €525k | Arsenal FC |
| 2011-02-01 | €2M | Arsenal FC |
| 2011-08-08 | €5.5M | Arsenal FC |
| 2012-02-06 | €12M | Arsenal FC |
| 2012-06-24 | €14M | Arsenal FC |
| 2013-01-28 | €15M | Arsenal FC |
| 2013-07-02 | €14M | Arsenal FC |
| 2014-01-15 | €15M | Arsenal FC |
| 2014-08-12 | €16M | Arsenal FC |
| 2015-02-12 | €14M | Arsenal FC |
| 2015-07-01 | €10M | Arsenal FC |
| 2016-01-04 | €10M | AS Roma |
| 2016-06-01 | €12M | AS Roma |
| 2016-08-01 | €12M | AS Roma |
| 2017-01-02 | €14M | AS Roma |
| 2017-06-08 | €17M | AS Roma |
| 2017-12-29 | €18M | Juventus FC |
| 2018-03-24 | €20M | Juventus FC |
| 2018-06-07 | €20M | Juventus FC |
| 2018-12-20 | €30M | Juventus FC |
| 2019-06-06 | €35M | Juventus FC |
| 2019-12-12 | €40M | Juventus FC |
| 2020-04-08 | €32M | Juventus FC |
| 2020-08-25 | €35M | Juventus FC |
| 2020-12-29 | €35M | Juventus FC |
| 2021-05-31 | €25M | Juventus FC |
| 2021-10-14 | €15M | Juventus FC |
| 2021-12-28 | €15M | Juventus FC |
| 2022-06-07 | €15M | Juventus FC |
| 2022-11-11 | €13M | Juventus FC |
| 2023-06-15 | €10M | Juventus FC |
| 2023-12-20 | €8M | Juventus FC |
| 2024-06-05 | €6M | Juventus FC |
| 2024-10-11 | €3M | FC Barcelona |
| 2024-12-27 | €1M | FC Barcelona |
| 2025-06-09 | €1M | FC Barcelona |
| 2025-12-12 | €900k | FC Barcelona |
| 2026-06-05 | €800k | FC Barcelona |
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
- −0.757
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 →Goalkeepers, all leagues485 players · median €1M
Valued above 39% of the 485 goalkeepers.
See them in the Explorer →Where Szczesny appears
- TerminalLaLiga in the Player Explorer
- TerminalLaLiga 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
- NylandGKSevilla FC · LaLiga€800k
- PratsCFRCD Mallorca · LaLiga€800k
- DuarteCBGetafe CF · LaLiga€800k
- CorrederaCMSporting Gijón · LaLiga€800k
- LunevGKDynamo Moscow · goalkeepers€800k
- LecomteGKFulham FC · goalkeepers€800k
- BentleyGKWolverhampton Wanderers · goalkeepers€800k
- RamosGKFC Porto · goalkeepers€800k
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).