Kévin
Boma
CBTogo · GD Estoril Praia
Player dossierLiga Portugal
KévinBoma
CBCentre-BackDefender
- Club
- GD Estoril Praia
- League
- Liga Portugal
- Nationality
- Togo
- Age
- 23
- Height
- 193 cm
- Foot
- Right
- Valued
- 28 May 2026
Liga PortugalReading the valuation
The market values Boma at €6M. Model A, which never saw Boma during training, estimates €2.9M: the market value is 109% above that estimate.
That is a factor of ×2.09. 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
- 50
- Minutes
- 4,193
- Goals
- 2
- Assists
- 1
- Started
- 48/50
- Min / app
- 84
- 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 Boma…
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 €6M
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.
96% this player83% defender median87th 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
- €300k
- Oct 2020
- Peak
- €6M
- Mar 2026
- Model target
- €6M
- May 2026
- Valuations
- 17
- 2 club changes
May 2026: €6M, GD Estoril Praia. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2020-10-15 | €300k | Angers SCO B |
| 2021-06-04 | €300k | Angers SCO B |
| 2021-12-16 | €300k | Angers SCO B |
| 2022-05-30 | €300k | Angers SCO B |
| 2022-10-28 | €300k | Rodez AF |
| 2023-06-16 | €400k | Rodez AF |
| 2023-10-27 | €300k | Rodez AF |
| 2023-12-13 | €300k | Rodez AF |
| 2024-03-26 | €400k | Rodez AF |
| 2024-06-11 | €400k | Rodez AF |
| 2024-10-08 | €600k | GD Estoril Praia |
| 2024-12-19 | €900k | GD Estoril Praia |
| 2025-03-31 | €2.5M | GD Estoril Praia |
| 2025-05-30 | €4M | GD Estoril Praia |
| 2025-12-18 | €4M | GD Estoril Praia |
| 2026-03-19 | €6M | GD Estoril Praia |
| 2026-05-28 | €6M | GD Estoril Praia |
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
- +0.739
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 →Liga Portugal423 players · median €1M
Valued above 80% of the 423 Liga Portugal players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 73% of the 2,065 defenders.
See them in the Explorer →Where Boma appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- BacherCBGD Estoril Praia · Liga Portugal€6M
- NiakatéCBSC Braga · Liga Portugal€6M
- TravassosRBMoreirense FC · Liga Portugal€6M
- EstevesAMGil Vicente FC · Liga Portugal€6M
- RüdigerCBReal Madrid · defenders€6M
- DigneLBAston Villa · defenders€6M
- RomagnoliCBSS Lazio · defenders€6M
- PoschCB1.FSV Mainz 05 · defenders€6M
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).