FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Timo

Horn

GKGermany · VfL Bochum

№ 84938Emerging €434k +0.48

Player dossierBundesliga

TimoHorn

GKGoalkeeperGoalkeeper

Club
VfL Bochum
League
Bundesliga
Nationality
Germany
Age
32
Height
192 cm
Foot
Left
Valued
16 Dec 2025

Reading the valuation

The market values Horn at €700k. Model A, which never saw Horn during training, estimates €434k: the market value is 61% above that estimate.

That is a factor of ×1.61. 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 €285k, 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.

▲ +0.48A €434k▲ +0.90B €285k
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
13
Minutes
1,170
Started
13/13
Min / app
90
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 Horn…

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 €700k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €700kModel A €434k

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 485 goalkeepers

Timo Horn's percentiles among goalkeepers: Minutes, two years 22nd, Starts 62nd, Minutes, last 365 days 41st, European club minutes 32nd22ndMinutes62ndStarts41stRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

100% this player100% goalkeeper median62nd percentile

70%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
€100k
Jul 2010
Peak
€12M
Jun 2017
Model target
€700k
Dec 2025
Valuations
36
4 club changes
Dec 2025€700kVfL BochumValuation the model is trained to reproduce

Dec 2025: €700k, VfL Bochum. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2010-07-15€100k1.FC Köln II
2011-07-11€250k1.FC Köln
2012-01-23€500k1.FC Köln
2012-06-29€500k1.FC Köln
2012-10-23€800k1.FC Köln
2013-01-04€1M1.FC Köln
2013-06-29€2M1.FC Köln
2014-01-20€2.5M1.FC Köln
2014-06-30€3M1.FC Köln
2014-11-03€4M1.FC Köln
2015-02-04€5M1.FC Köln
2015-07-01€6M1.FC Köln
2016-02-15€8M1.FC Köln
2016-07-22€10M1.FC Köln
2017-02-07€10M1.FC Köln
2017-06-19€12M1.FC Köln
2017-12-28€12M1.FC Köln
2018-06-05€7M1.FC Köln
2019-01-08€7M1.FC Köln
2019-06-12€6M1.FC Köln
2019-12-17€5M1.FC Köln
2020-04-08€4M1.FC Köln
2021-02-10€4M1.FC Köln
2021-06-09€4M1.FC Köln
2021-12-22€4M1.FC Köln
2022-03-24€2.8M1.FC Köln
2022-06-09€2M1.FC Köln
2022-11-09€1.5M1.FC Köln
2023-06-22€1.5M1.FC Köln
2023-10-25€1.2MWithout Club
2024-03-11€1MRed Bull Salzburg
2024-05-21€800kRed Bull Salzburg
2024-12-20€500kVfL Bochum
2025-03-27€800kVfL Bochum
2025-06-05€800kVfL Bochum
2025-12-16€700kVfL Bochum

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
+0.477

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

Valued above 3% of the 451 Bundesliga players.

€300k€2M€15M€100M€700kSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 35% of the 485 goalkeepers.

€20k€200k€2M€20M€700kSee them in the Explorer →

Where Horn 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).