Georgios
Katris
CBGreece · Panathinaikos
Player dossierSuper League
GeorgiosKatris
CBCentre-BackDefender
- Club
- Panathinaikos
- League
- Super League
- Nationality
- Greece
- Age
- 20
- Height
- –
- Foot
- Right
- Valued
- 4 Jun 2026
Reading the valuation
The market values Katris at €500k. Model A, which never saw Katris during training, estimates €4.1M: the market value is 88% below that estimate.
That is a factor of ×8.20. 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 €3.5M, 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
- 41
- Minutes
- 2,706
- Goals
- 1
- Assists
- 1
- Started
- 27/41
- Min / app
- 66
- 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 Katris…
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 €500k
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 2,065 defenders
Dashed ring: the defender median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
14% this player0% defender median76th 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
- €25k
- Sept 2023
- Peak
- €500k
- Jun 2026
- Model target
- €500k
- Jun 2026
- Valuations
- 8
- 3 club changes
Jun 2026: €500k, Panathinaikos. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2023-09-21 | €25k | Panathinaikos U19 |
| 2024-03-13 | €75k | Panathinaikos B |
| 2024-05-23 | €100k | Panathinaikos B |
| 2024-12-18 | €200k | Levadiakos |
| 2025-03-14 | €300k | Levadiakos |
| 2025-05-23 | €400k | Levadiakos |
| 2025-12-12 | €400k | Levadiakos |
| 2026-06-04 | €500k | Panathinaikos |
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
- −2.104
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 43% of the 356 Super League players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 19% of the 2,065 defenders.
See them in the Explorer →Where Katris appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- VidaCBAEK Athens · Super League€500k
- ZuberLWAtromitos Athens · Super League€500k
- MichorlCMAtromitos Athens · Super League€500k
- OdubajoRBAEK Athens · Super League€500k
- DanteCBOGC Nice · defenders€500k
- SilvaCBFC Porto · defenders€500k
- TavernierRBRangers FC · defenders€500k
- NegoRBLe Havre AC · defenders€500k
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).