FairValue

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Portrait of Albert Sambi Lokonga

Albert Sambi

Lokonga

CMBelgium · Hamburger SV

№ 381967Elite €5.3M +0.82

Image: FootyLogos

Player dossierBundesliga

Albert SambiLokonga

CMCentral MidfieldMidfield

Club
Hamburger SV
League
Bundesliga
Nationality
Belgium
Age
26
Height
183 cm
Foot
Right
Valued
27 May 2026

Reading the valuation

The market values Lokonga at €12M. Model A, which never saw Lokonga during training, estimates €5.3M: the market value is 126% above that estimate.

That is a factor of ×2.26. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.

Without league and club, Model B estimates €1.6M, 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.

▲ +0.82A €5.3M▲ +1.99B €1.6M
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
49
Minutes
3,278
Goals
5
Assists
2
Started
37/49
Min / app
67
Cards
7Y 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 Lokonga…

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 €12M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €12MModel A €5.3M

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

Albert Sambi Lokonga's percentiles among midfielders: Goals per 90 68th, Assists per 90 31st, Minutes, two years 62nd, Starts 62nd, Minutes, last 365 days 56th, European club minutes 30th68thGoals31stAssists62ndMinutes62ndStarts56thRecent30thEurope

Dashed ring: the midfielder median (50th percentile)

Goals per 90

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

0.14 this player0.08 midfielder median68th 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
€300k
Jan 2018
Peak
€16M
Oct 2021
Model target
€12M
May 2026
Valuations
27
4 club changes
May 2026€12MHamburger SVValuation the model is trained to reproduce

May 2026: €12M, Hamburger SV. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2018-01-09€300kRSC Anderlecht
2018-03-30€700kRSC Anderlecht
2018-06-03€700kRSC Anderlecht
2018-12-27€2MRSC Anderlecht
2019-06-10€2MRSC Anderlecht
2019-09-06€5MRSC Anderlecht
2019-12-13€11MRSC Anderlecht
2020-04-08€10MRSC Anderlecht
2020-10-16€10MRSC Anderlecht
2021-03-17€12MRSC Anderlecht
2021-06-07€12MRSC Anderlecht
2021-10-05€16MArsenal FC
2021-12-23€16MArsenal FC
2022-06-15€14MArsenal FC
2022-11-03€15MArsenal FC
2023-06-20€15MArsenal FC
2023-12-19€12MLuton Town
2024-03-14€15MLuton Town
2024-05-27€15MLuton Town
2024-10-11€12MSevilla FC
2024-12-27€12MSevilla FC
2025-03-21€9MSevilla FC
2025-06-09€8MSevilla FC
2025-10-14€6MHamburger SV
2025-12-19€8MHamburger SV
2026-03-20€10MHamburger SV
2026-05-27€12MHamburger SV

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
+0.815

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 →

Bundesliga451 players · median €5M

Valued above 70% of the 451 Bundesliga players.

€300k€2M€15M€100M€12MSee them in the Explorer →

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

Valued above 81% of the 1,687 midfielders.

€20k€200k€2M€20M€12MSee them in the Explorer →

Where Lokonga 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).