GeorgiosSaramantas

LBLeft-BackDefender

Club: Panionios FC
League: Super League
Nationality: Greece
Age: 33
Height: 170 cm
Foot: Left
Valued: 29 Dec 2025

Reading the valuation

The market values Saramantas at €100k. Model A, which never saw Saramantas during training, estimates €157k: the market value is 36% below that estimate.

That is a factor of ×1.57. 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 €211k, 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.

Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).

Apps: 18
Minutes: 843
Goals: 0
Assists: 0
Started: 11/18
Min / app: 47
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 Saramantas…

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 €100k

Checking API

Asking 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.

0% this player0% defender median30th percentile

0%peer deciles · median line · this player ●85%

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: €150k; Dec 2014
Peak: €600k; May 2018
Model target: €100k; Dec 2025
Valuations: 23; 3 club changes

Dec 2025€100kPanionios FCValuation the model is trained to reproduce

Dec 2025: €100k, Panionios FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table

Date	Market value	Club
2014-12-21	€150k	Iraklis Thessaloniki
2015-06-07	€250k	Iraklis Thessaloniki
2015-09-27	€300k	Iraklis Thessaloniki
2016-06-21	€400k	Iraklis Thessaloniki
2016-12-21	€400k	Iraklis Thessaloniki
2017-05-11	€450k	Iraklis Thessaloniki
2017-12-18	€500k	Panionios FC
2018-05-22	€600k	Panionios FC
2018-12-07	€450k	Panionios FC
2019-05-21	€450k	Panionios FC
2019-12-18	€400k	Panionios FC
2020-04-08	€325k	Panionios FC
2020-08-04	€300k	Panionios FC
2021-02-12	€250k	PAS Lamia 1964
2021-11-01	€250k	PAS Lamia 1964
2022-06-09	€250k	PAS Lamia 1964
2022-11-07	€250k	PAS Lamia 1964
2023-05-22	€250k	PAS Lamia 1964
2023-12-20	€200k	PAS Lamia 1964
2024-05-30	€175k	PAS Lamia 1964
2024-12-18	€175k	PAS Lamia 1964
2025-05-16	€125k	Panionios FC
2025-12-29	€100k	Panionios FC

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: −0.449

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 2% of the 356 Super League players.

See them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 1% of the 2,065 defenders.

See them in the Explorer →

Where Saramantas appears

TerminalSuper League in the Player Explorer
TerminalSuper League 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

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).