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…

Toni

Borevković

CBCroatia · Samsunspor

№ 396342Established €3.1M −0.45

Player dossierSüper Lig

ToniBorevković

CBCentre-BackDefender

Club
Samsunspor
League
Süper Lig
Nationality
Croatia
Age
28
Height
193 cm
Foot
Right
Valued
21 May 2026

Reading the valuation

The market values Borevković at €2M. Model A, which never saw Borevković during training, estimates €3.1M: the market value is 36% below that estimate.

That is a factor of ×1.56. 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 €5.2M, 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.

▼ −0.45A €3.1M▼ −0.95B €5.2M
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
53
Minutes
4,256
Goals
2
Assists
0
Started
45/53
Min / app
80
Cards
13Y 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 Borevković…

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 €2M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €2MModel A €3.1M

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

Toni Borevković's percentiles among defenders: Goals per 90 58th, Assists per 90 17th, Minutes, two years 73rd, Starts 55th, Minutes, last 365 days 35th, European club minutes 75th58thGoals17thAssists73rdMinutes55thStarts35thRecent75thEurope

Dashed ring: the defender median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

13% this player0% defender median75th 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
Oct 2017
Peak
€5M
Dec 2024
Model target
€2M
May 2026
Valuations
24
5 club changes
May 2026€2MSamsunsporValuation the model is trained to reproduce

May 2026: €2M, Samsunspor. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2017-10-23€150kNK Rudes
2018-03-18€150kNK Rudes
2018-11-01€800kRio Ave FC
2019-01-11€800kRio Ave FC
2019-06-07€1MRio Ave FC
2019-12-30€1.5MRio Ave FC
2020-04-08€1.2MRio Ave FC
2020-08-17€2.5MRio Ave FC
2021-01-28€3.5MRio Ave FC
2021-05-21€3MRio Ave FC
2021-12-27€3MVitória Guimarães SC
2022-05-31€3MVitória Guimarães SC
2022-11-08€2MHNK Hajduk Split
2023-06-06€1MHNK Hajduk Split
2023-12-27€1MVitória Guimarães SC
2024-03-08€2MVitória Guimarães SC
2024-06-06€3MVitória Guimarães SC
2024-10-08€4MVitória Guimarães SC
2024-12-19€5MVitória Guimarães SC
2025-05-30€5MVitória Guimarães SC
2025-10-01€3.5MSamsunspor
2025-12-17€3.5MSamsunspor
2026-03-05€2.5MSamsunspor
2026-05-21€2MSamsunspor

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
−0.445

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 →

Süper Lig428 players · median €1.2M

Valued above 61% of the 428 Süper Lig players.

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

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

Valued above 49% of the 2,065 defenders.

€20k€200k€2M€20M€2MSee them in the Explorer →

Where Borevković 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).