FairValue

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  • 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.

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Brent

Gabriël

GKBelgium · Zulte Waregem

№ 338665Emerging €1.5M −0.42

Player dossierPro League

BrentGabriël

GKGoalkeeperGoalkeeper

Club
Zulte Waregem
League
Pro League
Nationality
Belgium
Age
27
Height
190 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Gabriël at €1M. Model A, which never saw Gabriël during training, estimates €1.5M: the market value is 34% below that estimate.

That is a factor of ×1.52. 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 €1.5M, 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.

▼ −0.42A €1.5M▼ −0.37B €1.5M
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
36
Minutes
3,240
Started
36/36
Min / app
90
Cards
1Y 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 Gabriël…

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 €1M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €1MModel A €1.5M

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

Brent Gabriël's percentiles among goalkeepers: Minutes, two years 60th, Starts 62nd, Minutes, last 365 days 86th, European club minutes 32nd60thMinutes62ndStarts86thRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Minutes, last 365 days

Club minutes in the final year of the window: recent involvement, or the absence of it.

3,240 this player1,560 goalkeeper median86th percentile

0peer deciles · median line · this player ●4,970

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 2018
Peak
€1M
Jun 2026
Model target
€1M
Jun 2026
Valuations
21
6 club changes
Jun 2026€1MZulte WaregemValuation the model is trained to reproduce

Jun 2026: €1M, Zulte Waregem. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2018-07-05€100kClub Brugge KV
2018-12-27€100kClub Brugge KV
2019-06-10€100kClub Brugge KV
2019-09-13€350kKVRS Waasland - SK Beveren
2019-12-13€350kKVRS Waasland - SK Beveren
2020-03-30€250kKVRS Waasland - SK Beveren
2020-10-16€200kKVRS Waasland - SK Beveren
2021-01-04€150kKVRS Waasland - SK Beveren
2021-06-07€150kKVRS Waasland - SK Beveren
2021-10-13€100kKVRS Waasland - SK Beveren
2022-01-13€100kKVRS Waasland - SK Beveren
2022-04-19€100kKVRS Waasland - SK Beveren
2022-12-22€75kFCV Dender EH
2023-05-30€75kSK Beveren
2023-12-28€75kKV Oostende (-2024)
2024-06-20€75kKV Oostende (-2024)
2024-10-15€200kKSC Lokeren-Temse
2024-12-20€300kKSC Lokeren-Temse
2025-04-24€400kKSC Lokeren-Temse
2025-12-10€800kZulte Waregem
2026-06-04€1MZulte Waregem

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
−0.422

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 →

Pro League350 players · median €1.8M

Valued above 27% of the 350 Pro League players.

€100k€750k€5M€30M€1MSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 48% of the 485 goalkeepers.

€20k€200k€2M€20M€1MSee them in the Explorer →

Where Gabriël 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).