FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Brad

Lyons

CMNorthern Ireland · Kilmarnock FC

№ 334816Emerging €407k −0.15

Player dossierPremiership

BradLyons

CMCentral MidfieldMidfield

Club
Kilmarnock FC
League
Premiership
Nationality
Northern Ireland
Age
28
Height
176 cm
Foot
Right
Valued
20 May 2026

Reading the valuation

The market values Lyons at €350k. Model A, which never saw Lyons during training, estimates €407k: the market value is 14% below that estimate.

That is a factor of ×1.16. 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 €1.9M, 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.

▼ −0.15A €407k▼ −1.67B €1.9M
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
67
Minutes
5,209
Goals
2
Assists
3
Started
61/67
Min / app
78
Cards
14Y 1R

Club matches, two years to the valuation date

The Valuation Journey

What moves Model A

Asking the prediction API to explain Model A for Lyons…

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 €350k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €350kModel A €407k

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

Brad Lyons's percentiles among midfielders: Goals per 90 26th, Assists per 90 29th, Minutes, two years 88th, Starts 88th, Minutes, last 365 days 67th, European club minutes 72nd26thGoals29thAssists88thMinutes88thStarts67thRecent72ndEurope

Dashed ring: the midfielder median (50th percentile)

Minutes, two years

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

5,209 this player2,607 midfielder median88th percentile

451peer deciles · median line · this player ●9,624

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
Jun 2019
Peak
€350k
May 2024
Model target
€350k
May 2026
Valuations
12
1 club change
May 2026€350kKilmarnock FCValuation the model is trained to reproduce

May 2026: €350k, Kilmarnock FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2019-06-28€250kBlackburn Rovers
2021-06-30€150kBlackburn Rovers
2021-12-31€150kKilmarnock FC
2022-05-31€200kKilmarnock FC
2022-12-13€200kKilmarnock FC
2023-06-26€200kKilmarnock FC
2023-12-05€250kKilmarnock FC
2024-05-30€350kKilmarnock FC
2024-12-03€350kKilmarnock FC
2025-06-17€350kKilmarnock FC
2025-12-10€350kKilmarnock FC
2026-05-20€350kKilmarnock FC

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
−0.151

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 →

Premiership311 players · median €400k

Valued above 45% of the 311 Premiership players.

€20k€150k€1M€7.5M€350kSee them in the Explorer →

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

Valued above 10% of the 1,687 midfielders.

€20k€200k€2M€20M€350kSee them in the Explorer →

Where Lyons 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).