Ali
Maamar
RBMorocco · RSC Anderlecht
Player dossierPro League
AliMaamar
RBRight-BackDefender
- Club
- RSC Anderlecht
- League
- Pro League
- Nationality
- Morocco
- Age
- 21
- Height
- 182 cm
- Foot
- Right
- Valued
- 4 Jun 2026
Pro LeagueReading the valuation
The market values Maamar at €2.5M. Model A, which never saw Maamar during training, estimates €3.9M: the market value is 35% below that estimate.
That is a factor of ×1.55. 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 €11.1M, 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.
- Apps
- 38
- Minutes
- 2,276
- Goals
- 0
- Assists
- 3
- Started
- 24/38
- Min / app
- 60
- Cards
- 8Y 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 Maamar…
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 €2.5M
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 2,065 defenders
Dashed ring: the defender median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
21% this player0% defender median86th 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
- €25k
- Oct 2023
- Peak
- €2.5M
- Jun 2026
- Model target
- €2.5M
- Jun 2026
- Valuations
- 9
- 1 club change
Jun 2026: €2.5M, RSC Anderlecht. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2023-10-02 | €25k | RSCA Futures |
| 2023-12-28 | €25k | RSCA Futures |
| 2024-06-20 | €150k | RSCA Futures |
| 2024-10-15 | €300k | RSCA Futures |
| 2024-12-20 | €400k | RSCA Futures |
| 2025-03-26 | €1.2M | RSC Anderlecht |
| 2025-06-12 | €2M | RSC Anderlecht |
| 2025-12-10 | €2M | RSC Anderlecht |
| 2026-06-04 | €2.5M | RSC Anderlecht |
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
- −0.437
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 →Pro League350 players · median €1.8M
Valued above 60% of the 350 Pro League players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 54% of the 2,065 defenders.
See them in the Explorer →Where Maamar appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- RoefGKKAA Gent · Pro League€2.5M
- LopesCMKAA Gent · Pro League€2.5M
- NsimbaCFFCV Dender EH · Pro League€2.5M
- SardellaRBRSC Anderlecht · Pro League€2.5M
- GraditCBRC Lens · defenders€2.5M
- MainkaCB1.FC Heidenheim 1846 · defenders€2.5M
- CoufalRBTSG 1899 Hoffenheim · defenders€2.5M
- StarkCBSV Werder Bremen · defenders€2.5M
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).