FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Matt O'Riley

Matt

O'Riley

CMDenmark · Brighton & Hove Albion

№ 406634Elite €15.1M +0.18

Image: FootyLogos

Player dossierPremier League

MattO'Riley

CMCentral MidfieldMidfield

Club
Brighton & Hove Albion
League
Premier League
Nationality
Denmark
Age
25
Height
189 cm
Foot
Left
Valued
3 Jun 2026

Reading the valuation

The market values O'Riley at €18M. Model A, which never saw O'Riley during training, estimates €15.1M: the market value is 20% above that estimate.

That is a factor of ×1.20. 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 €3.2M, 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.

▲ +0.18A €15.1M▲ +1.72B €3.2M
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
54
Minutes
2,435
Goals
4
Assists
7
Started
26/54
Min / app
45
Cards
4Y 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 O'Riley…

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 €18M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €18MModel A €15.1M

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 1,687 midfielders

Matt O'Riley's percentiles among midfielders: Goals per 90 72nd, Assists per 90 93rd, Minutes, two years 47th, Starts 19th, Minutes, last 365 days 42nd, European club minutes 77th72ndGoals93rdAssists47thMinutes19thStarts42ndRecent77thEurope

Dashed ring: the midfielder median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.26 this player0.09 midfielder median93rd percentile

0.00peer deciles · median line · this player ●0.74

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
€250k
Oct 2019
Peak
€22M
Dec 2024
Model target
€18M
Jun 2026
Valuations
14
4 club changes
Jun 2026€18MBrighton & Hove AlbionValuation the model is trained to reproduce

Jun 2026: €18M, Brighton & Hove Albion. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2019-10-17€250kFulham FC
2020-02-27€500kFulham FC
2020-04-08€450kFulham FC
2022-06-27€2.3MCeltic FC
2022-12-13€5MCeltic FC
2023-03-22€7MCeltic FC
2023-06-26€9MCeltic FC
2023-09-22€10MCeltic FC
2023-12-05€13MCeltic FC
2024-05-30€20MCeltic FC
2024-12-16€22MBrighton & Hove Albion
2025-05-30€22MBrighton & Hove Albion
2025-12-15€20MOlympique Marseille
2026-06-03€18MBrighton & Hove Albion

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
+0.179

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 50% of the 555 Premier League players.

€150k€1M€7.5M€50M€18MSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 87% of the 1,687 midfielders.

€20k€200k€2M€20M€18MSee them in the Explorer →

Where O'Riley 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).