Rabby
Nzingoula
DMFrance · RC Strasbourg Alsace
Player dossierLigue 1
RabbyNzingoula
DMDefensive MidfieldMidfield
- Club
- RC Strasbourg Alsace
- League
- Ligue 1
- Nationality
- France
- Age
- 20
- Height
- 183 cm
- Foot
- Right
- Valued
- 15 Dec 2025
Reading the valuation
The market values Nzingoula at €2M. Model A, which never saw Nzingoula during training, estimates €12.1M: the market value is 83% below that estimate.
That is a factor of ×6.03. 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 €3.7M, 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.
- Apps
- 38
- Minutes
- 1,877
- Goals
- 1
- Assists
- 1
- Started
- 21/38
- Min / app
- 49
- Cards
- 12Y 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 Nzingoula…
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 APIAsking 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
Dashed ring: the midfielder median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
0% this player0% midfielder median59th percentile
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
- €200k
- Mar 2024
- Peak
- €2.5M
- Dec 2024
- Model target
- €2M
- Dec 2025
- Valuations
- 6
- 2 club changes
Dec 2025: €2M, RC Strasbourg Alsace. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2024-03-19 | €200k | Racing Strasbourg B |
| 2024-06-03 | €300k | Racing Strasbourg B |
| 2024-10-07 | €1.5M | Montpellier HSC |
| 2024-12-10 | €2.5M | Montpellier HSC |
| 2025-06-03 | €2.5M | Montpellier HSC |
| 2025-12-15 | €2M | RC Strasbourg Alsace |
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
- −1.796
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.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 46% of the 1,687 midfielders.
See them in the Explorer →Where Nzingoula appears
- TerminalLigue 1 in the Player Explorer
- TerminalLigue 1 on the League Landscape
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- MasuakuLBRC Lens · Ligue 1€2M
- GbaminCBFC Metz · Ligue 1€2M
- MbembaCBLOSC Lille · Ligue 1€2M
- AbdiLBOGC Nice · Ligue 1€2M
- GündoğanCMGalatasaray · midfielders€2M
- GudeljDMSevilla FC · midfielders€2M
- HazardAMRSC Anderlecht · midfielders€2M
- McGregorDMCeltic FC · midfielders€2M
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).