Karim
Coulibaly
CBGermany · SV Werder Bremen
Player dossierBundesliga
KarimCoulibaly
CBCentre-BackDefender
- Club
- SV Werder Bremen
- League
- Bundesliga
- Nationality
- Germany
- Age
- 19
- Height
- 191 cm
- Foot
- Left
- Valued
- 27 May 2026
Reading the valuation
The market values Coulibaly at €28M. Model A, which never saw Coulibaly during training, estimates €12.5M: the market value is 124% above that estimate.
That is a factor of ×2.24. 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 €6.4M, 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
- 27
- Minutes
- 2,122
- Goals
- 1
- Assists
- 0
- Started
- 24/27
- Min / app
- 79
- Cards
- 3Y 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 Coulibaly…
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 €28M
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)
Starts
Share of appearances started rather than entered from the bench.
89% this player83% defender median66th 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
- €1M
- Aug 2025
- Peak
- €28M
- May 2026
- Model target
- €28M
- May 2026
- Valuations
- 5
- 0 club changes
May 2026: €28M, SV Werder Bremen. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2025-08-24 | €1M | SV Werder Bremen |
| 2025-10-14 | €8M | SV Werder Bremen |
| 2025-12-19 | €20M | SV Werder Bremen |
| 2026-03-20 | €22M | SV Werder Bremen |
| 2026-05-27 | €28M | SV Werder Bremen |
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
- +0.808
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 89% of the 451 Bundesliga players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 95% of the 2,065 defenders.
See them in the Explorer →Where Coulibaly appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- TahCBBayern Munich · Bundesliga€28M
- GrudaAMRB Leipzig · Bundesliga€28M
- OuédraogoCMRB Leipzig · Bundesliga€28M
- LarssonCMEintracht Frankfurt · Bundesliga€28M
- MarquinhosCBParis Saint-Germain · defenders€28M
- MilenkovićCBNottingham Forest · defenders€28M
- BasseyCBFulham FC · defenders€28M
- FofanaCBChelsea FC · defenders€28M
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).