FairValue

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Arthur

Masuaku

LBDR Congo · RC Lens

№ 181380Established €2.9M −0.39

Player dossierLigue 1

ArthurMasuaku

LBLeft-BackDefender

Club
RC Lens
League
Ligue 1
Nationality
DR Congo
Age
32
Height
179 cm
Foot
Left
Valued
1 Jun 2026

Reading the valuation

The market values Masuaku at €2M. Model A, which never saw Masuaku during training, estimates €2.9M: the market value is 32% below that estimate.

That is a factor of ×1.47. 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, 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.

▼ −0.39A €2.9M▲ +0.04B €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
50
Minutes
3,987
Goals
1
Assists
9
Started
46/50
Min / app
80
Cards
16Y 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 Masuaku…

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 €2M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €2MModel A €2.9M

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 2,065 defenders

Arthur Masuaku's percentiles among defenders: Goals per 90 43rd, Assists per 90 96th, Minutes, two years 69th, Starts 76th, Minutes, last 365 days 10th, European club minutes 84th43rdGoals96thAssists69thMinutes76thStarts10thRecent84thEurope

Dashed ring: the defender median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.20 this player0.04 defender median96th percentile

0.00peer deciles · median line · this player ●0.58

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 2013
Peak
€10M
Sept 2019
Model target
€2M
Jun 2026
Valuations
35
5 club changes
Jun 2026€2MRC LensValuation the model is trained to reproduce

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

Show as a table
DateMarket valueClub
2013-07-02€100kValenciennes FC
2013-09-13€300kValenciennes FC
2014-01-14€500kValenciennes FC
2014-11-11€1.5MOlympiacos Piraeus
2015-05-10€4.5MOlympiacos Piraeus
2015-09-27€7MOlympiacos Piraeus
2016-06-21€7MOlympiacos Piraeus
2017-02-20€7MWest Ham United
2017-06-28€7MWest Ham United
2018-01-02€7MWest Ham United
2018-05-28€7MWest Ham United
2018-12-19€7MWest Ham United
2019-06-13€7MWest Ham United
2019-09-12€10MWest Ham United
2019-12-10€10MWest Ham United
2020-03-09€8MWest Ham United
2020-04-08€6.5MWest Ham United
2020-10-13€7.5MWest Ham United
2021-03-18€7.5MWest Ham United
2021-06-03€7MWest Ham United
2021-12-23€5MWest Ham United
2022-06-15€5MWest Ham United
2022-10-27€5.5MBesiktas JK
2023-03-14€5.5MBesiktas JK
2023-06-08€6MBesiktas JK
2023-09-27€6MBesiktas JK
2023-12-21€5MBesiktas JK
2024-03-15€5MBesiktas JK
2024-05-31€4.2MBesiktas JK
2024-10-04€4MBesiktas JK
2024-12-23€3.5MBesiktas JK
2025-03-20€3.2MBesiktas JK
2025-06-18€3MBesiktas JK
2025-12-09€2.5MSunderland AFC
2026-06-01€2MRC Lens

Audit context group-level, not about this player

Audit group
non-UEFA
Population gap, Model A
+0.093 95% CI +0.063 to +0.124
This player, market vs held-out A
−0.385

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 20% of the 423 Ligue 1 players.

€100k€750k€5M€30M€2MSee them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 49% of the 2,065 defenders.

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

Where Masuaku 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).