FairValue

Checking model

Esc

  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
  • EnvironmentTerminalExplore, compare and track players; market, league and model views.
  • EnvironmentStoriesValuations, head-to-heads and research findings, told as stories.
  • TerminalPlayer ExplorerSearch, filter and sort the player export.
  • TerminalComparison StudioTwo to four players on one scale.
  • TerminalWatchlistsNamed collections, kept in this browser.
  • TerminalMarket LandscapeHow observed value is distributed, and where the model drifts.

↑ ↓ to move · Enter to open · Esc to closeLoading player index…

Danil

Stepanov

LBRussia · Torpedo Moscow

№ 456182Emerging €294k +0.17

Player dossierPremier Liga

DanilStepanov

LBLeft-BackDefender

Club
Torpedo Moscow
League
Premier Liga
Nationality
Russia
Age
25
Height
172 cm
Foot
Left
Valued
3 Dec 2025

Reading the valuation

The market values Stepanov at €350k. Model A, which never saw Stepanov during training, estimates €294k: the market value is 19% above that estimate.

That is a factor of ×1.19. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.

Without league and club, Model B estimates €591k, 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.

▲ +0.17A €294k▼ −0.52B €591k
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
20
Minutes
1,112
Goals
0
Assists
0
Started
12/20
Min / app
56
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 Stepanov…

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 €350k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €350kModel A €294k

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

Danil Stepanov's percentiles among defenders: Goals per 90 18th, Assists per 90 17th, Minutes, two years 14th, Starts 15th, Minutes, last 365 days 17th, European club minutes 30th18thGoals17thAssists14thMinutes15thStarts17thRecent30thEurope

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
€125k
Dec 2016
Peak
€2M
Dec 2021
Model target
€350k
Dec 2025
Valuations
23
6 club changes
Dec 2025€350kTorpedo MoscowValuation the model is trained to reproduce

Dec 2025: €350k, Torpedo Moscow. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2016-12-02€125kUnknown
2017-06-01€175kUnknown
2018-06-06€125kRubin Kazan II
2018-12-20€175kRubin Kazan II
2019-04-24€300kRubin Kazan
2019-06-14€700kRubin Kazan
2019-09-10€1.2MRubin Kazan
2019-12-23€1.2MRubin Kazan
2020-04-08€1MRubin Kazan
2020-07-29€1MRubin Kazan
2020-12-29€1.5MRotor Volgograd
2021-06-02€1.8MRotor Volgograd
2021-12-29€2MArsenal Tula
2022-06-02€2MArsenal Tula
2022-12-08€1.2MArsenal Tula
2023-06-19€900kArsenal Tula
2023-11-30€900kFC Khimki
2024-06-14€1.2MFC Khimki
2024-09-18€800kFC Khimki
2024-12-12€600kFC Khimki
2025-06-04€600kFC Khimki
2025-09-18€500kTorpedo Moscow
2025-12-03€350kTorpedo Moscow

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
+0.173

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 →

Premier Liga412 players · median €1M

Valued above 8% of the 412 Premier Liga players.

€50k€300k€2M€15M€350kSee them in the Explorer →

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

Valued above 12% of the 2,065 defenders.

€20k€200k€2M€20M€350kSee them in the Explorer →

Where Stepanov 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).