FairValue

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Patrick

Erras

CBGermany · Holstein Kiel

№ 193859Emerging €1.2M −1.36

Player dossierBundesliga

PatrickErras

CBCentre-BackDefender

Club
Holstein Kiel
League
Bundesliga
Nationality
Germany
Age
30
Height
196 cm
Foot
Right
Valued
16 Dec 2025

Reading the valuation

The market values Erras at €300k. Model A, which never saw Erras during training, estimates €1.2M: the market value is 74% below that estimate.

That is a factor of ×3.89. 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 €631k, 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.

▼ −1.36A €1.2M▼ −0.74B €631k
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
12
Minutes
968
Goals
1
Assists
0
Started
12/12
Min / app
81
Cards
2Y 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 Erras…

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 €300k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €300kModel A €1.2M

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

Patrick Erras's percentiles among defenders: Goals per 90 85th, Assists per 90 17th, Minutes, two years 11th, Starts 97th, Minutes, last 365 days 1st, European club minutes 30th85thGoals17thAssists11thMinutes97thStarts1stRecent30thEurope

Dashed ring: the defender median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

100% this player83% defender median97th percentile

18%peer deciles · median line · this player ●100%

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 2014
Peak
€3M
Jun 2019
Model target
€300k
Dec 2025
Valuations
28
3 club changes
Dec 2025€300kHolstein KielValuation the model is trained to reproduce

Dec 2025: €300k, Holstein Kiel. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2014-07-31€50k1.FC Nuremberg II
2015-08-07€50k1.FC Nuremberg II
2016-02-11€500k1.FC Nuremberg
2016-03-16€1M1.FC Nuremberg
2016-07-22€1M1.FC Nuremberg
2017-01-23€1M1.FC Nuremberg
2017-06-27€900k1.FC Nuremberg
2018-01-22€900k1.FC Nuremberg
2018-06-19€1.3M1.FC Nuremberg
2018-12-18€1.3M1.FC Nuremberg
2019-06-05€3M1.FC Nuremberg
2019-09-25€2.5M1.FC Nuremberg
2019-12-13€1.5M1.FC Nuremberg
2020-04-08€1.2M1.FC Nuremberg
2021-02-10€700kSV Werder Bremen
2021-06-09€700kSV Werder Bremen
2021-10-13€600kHolstein Kiel
2021-12-15€500kHolstein Kiel
2022-06-16€500kHolstein Kiel
2022-11-30€700kHolstein Kiel
2023-06-28€700kHolstein Kiel
2023-12-15€700kHolstein Kiel
2024-03-22€850kHolstein Kiel
2024-06-06€1MHolstein Kiel
2024-12-20€1MHolstein Kiel
2025-06-05€800kHolstein Kiel
2025-10-09€600kHolstein Kiel
2025-12-16€300kHolstein Kiel

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
−1.359

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 →

Bundesliga451 players · median €5M

The joint lowest observed value among 451 Bundesliga players.

€300k€2M€15M€100M€300kSee them in the Explorer →

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

Valued above 9% of the 2,065 defenders.

€20k€200k€2M€20M€300kSee them in the Explorer →

Where Erras appears

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).