FairValue

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

Mayulu

CMFrance · Paris Saint-Germain

№ 903693World Class €36M +0.11

Player dossierLigue 1

SennyMayulu

CMCentral MidfieldMidfield

Club
Paris Saint-Germain
League
Ligue 1
Nationality
France
Age
20
Height
183 cm
Foot
Both
Valued
1 Jun 2026

Reading the valuation

The market values Mayulu at €40M. Model A, which never saw Mayulu during training, estimates €36M: the market value is 11% above that estimate.

That is a factor of ×1.11. 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 €23.2M, 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.

▲ +0.11A €36M▲ +0.55B €23.2M
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
68
Minutes
3,169
Goals
11
Assists
6
Started
36/68
Min / app
47
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 Mayulu…

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 €40M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €40MModel A €36M

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

Senny Mayulu's percentiles among midfielders: Goals per 90 94th, Assists per 90 77th, Minutes, two years 60th, Starts 25th, Minutes, last 365 days 74th, European club minutes 86th94thGoals77thAssists60thMinutes25thStarts74thRecent86thEurope

Dashed ring: the midfielder median (50th percentile)

Goals per 90

Club goals per 90 minutes played in the two years to the valuation date.

0.31 this player0.08 midfielder median94th percentile

0.00peer deciles · median line · this player ●0.93

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
Mar 2024
Peak
€40M
Dec 2025
Model target
€40M
Jun 2026
Valuations
8
0 club changes
Jun 2026€40MParis Saint-GermainValuation the model is trained to reproduce

Jun 2026: €40M, Paris Saint-Germain. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2024-03-19€1MParis Saint-Germain
2024-06-03€5MParis Saint-Germain
2024-12-10€5MParis Saint-Germain
2025-03-24€10MParis Saint-Germain
2025-06-03€15MParis Saint-Germain
2025-10-10€25MParis Saint-Germain
2025-12-15€40MParis Saint-Germain
2026-06-01€40MParis Saint-Germain

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
+0.106

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 →

Ligue 1423 players · median €5M

Valued above 95% of the 423 Ligue 1 players.

€100k€750k€5M€30M€40MSee them in the Explorer →

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

Valued above 96% of the 1,687 midfielders.

€20k€200k€2M€20M€40MSee them in the Explorer →

Where Mayulu 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).