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…

Bünyamin

Balcı

RBTürkiye · Antalyaspor

№ 620072Established €1.2M +0.53

Player dossierSüper Lig

BünyaminBalcı

RBRight-BackDefender

Club
Antalyaspor
League
Süper Lig
Nationality
Türkiye
Age
25
Height
173 cm
Foot
Right
Valued
21 May 2026

Reading the valuation

The market values Balcı at €2M. Model A, which never saw Balcı during training, estimates €1.2M: the market value is 70% above that estimate.

That is a factor of ×1.70. 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 €1.8M, 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.

▲ +0.53A €1.2M▲ +0.13B €1.8M
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
3,717
Goals
0
Assists
5
Started
41/53
Min / app
70
Cards
7Y 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 Balcı…

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 €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

Bünyamin Balcı's percentiles among defenders: Goals per 90 18th, Assists per 90 82nd, Minutes, two years 65th, Starts 39th, Minutes, last 365 days 76th, European club minutes 30th18thGoals82ndAssists65thMinutes39thStarts76thRecent30thEurope

Dashed ring: the defender median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.12 this player0.04 defender median82nd percentile

0.00peer deciles · median line · this player ●0.58

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
Jun 2019
Peak
€4M
Jan 2022
Model target
€2M
May 2026
Valuations
23
1 club change
May 2026€2MAntalyasporValuation the model is trained to reproduce

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

Show as a table
DateMarket valueClub
2019-06-04€50kAntalyaspor U21
2020-01-03€75kAntalyaspor
2020-08-04€500kAntalyaspor
2020-12-23€1.5MAntalyaspor
2021-03-16€2.5MAntalyaspor
2021-05-21€3.4MAntalyaspor
2021-10-12€3.8MAntalyaspor
2022-01-04€4MAntalyaspor
2022-03-31€4MAntalyaspor
2022-06-01€4MAntalyaspor
2022-10-27€4MAntalyaspor
2023-03-14€4MAntalyaspor
2023-06-08€4MAntalyaspor
2023-09-27€3.7MAntalyaspor
2023-12-21€3.5MAntalyaspor
2024-03-15€3MAntalyaspor
2024-05-31€3MAntalyaspor
2024-10-04€2.5MAntalyaspor
2024-12-23€2MAntalyaspor
2025-03-20€2MAntalyaspor
2025-06-18€2.2MAntalyaspor
2025-12-17€2.2MAntalyaspor
2026-05-21€2MAntalyaspor

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
+0.533

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 Balcı 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).