FairValue

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Portrait of Brian Brobbey

Brian

Brobbey

CFNetherlands · Sunderland AFC

№ 473169World Class €28.1M +0.06

Image: FootyLogos

Player dossierPremier League

BrianBrobbey

CFCentre-ForwardAttack

Club
Sunderland AFC
League
Premier League
Nationality
Netherlands
Age
24
Height
181 cm
Foot
Right
Valued
3 Jun 2026

Reading the valuation

The market values Brobbey at €30M. Model A, which never saw Brobbey during training, estimates €28.1M: the market value is 7% above that estimate.

That is a factor of ×1.07. 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 €22.9M, 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.

▲ +0.06A €28.1M▲ +0.27B €22.9M
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
76
Minutes
4,292
Goals
14
Assists
7
Started
55/76
Min / app
56
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 Brobbey…

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 €30M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €30MModel A €28.1M

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 1,583 attackers

Brian Brobbey's percentiles among attackers: Goals per 90 56th, Assists per 90 50th, Minutes, two years 84th, Starts 72nd, Minutes, last 365 days 72nd, European club minutes 77th56thGoals50thAssists84thMinutes72ndStarts72ndRecent77thEurope

Dashed ring: the attacker median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

4,292 this player2,242 attacker median84th percentile

450peer deciles · median line · this player ●8,788

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
€1M
Jul 2019
Peak
€35M
May 2024
Model target
€30M
Jun 2026
Valuations
23
3 club changes
Jun 2026€30MSunderland AFCValuation the model is trained to reproduce

Jun 2026: €30M, Sunderland AFC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2019-07-01€1MAjax Amsterdam U21
2020-04-08€900kAjax Amsterdam U21
2020-06-29€2MAjax Amsterdam U21
2020-10-24€3MAjax Amsterdam U21
2020-12-31€4MAjax Amsterdam U21
2021-03-16€6MAjax Amsterdam U21
2021-05-19€7.5MAjax Amsterdam U21
2021-12-22€7.5MRB Leipzig
2022-06-08€9MAjax Amsterdam
2022-09-14€14MAjax Amsterdam
2022-11-11€14MAjax Amsterdam
2023-03-17€13MAjax Amsterdam
2023-06-23€12MAjax Amsterdam
2023-12-15€15MAjax Amsterdam
2024-03-18€25MAjax Amsterdam
2024-05-31€35MAjax Amsterdam
2024-12-17€30MAjax Amsterdam
2025-03-28€27MAjax Amsterdam
2025-05-28€22MAjax Amsterdam
2025-10-17€20MSunderland AFC
2025-12-09€20MSunderland AFC
2026-03-09€25MSunderland AFC
2026-06-03€30MSunderland AFC

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
+0.064

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 League555 players · median €18M

Valued above 73% of the 555 Premier League players.

€150k€1M€7.5M€50M€30MSee them in the Explorer →

Attackers, all leagues1,583 players · median €2.5M

Valued above 92% of the 1,583 attackers.

€20k€300k€5M€75M€30MSee them in the Explorer →

Where Brobbey 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).