Oleksandr
Demchenko
DMUkraine · Kolos Kovalivka
Player dossierPremier Liha
OleksandrDemchenko
DMDefensive MidfieldMidfield
- Club
- Kolos Kovalivka
- League
- Premier Liha
- Nationality
- Ukraine
- Age
- 30
- Height
- 181 cm
- Foot
- Right
- Valued
- 2 Jun 2026
Reading the valuation
The market values Demchenko at €500k. Model A, which never saw Demchenko during training, estimates €387k: the market value is 29% above that estimate.
That is a factor of ×1.29. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.
Without league and club, Model B estimates €994k, 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
- 50
- Minutes
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- Goals
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- Started
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- Cards
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Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Demchenko…
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 €500k
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)
Starts
Share of appearances started rather than entered from the bench.
78% this player69% midfielder median67th 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
- Sept 2019
- Peak
- €600k
- Jun 2023
- Model target
- €500k
- Jun 2026
- Valuations
- 15
- 5 club changes
Jun 2026: €500k, Kolos Kovalivka. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2019-09-14 | €25k | Metalist 1925 Kharkiv |
| 2020-10-05 | €25k | Nyva Ternopil |
| 2020-12-05 | €50k | Nyva Ternopil |
| 2021-06-17 | €75k | Kremin Kremenchuk |
| 2021-09-03 | €200k | FC Oleksandriya |
| 2021-12-20 | €300k | FC Oleksandriya |
| 2022-05-18 | €300k | FC Oleksandriya |
| 2022-12-06 | €500k | FC Oleksandriya |
| 2023-06-21 | €600k | Chornomorets Odesa |
| 2023-12-11 | €600k | Kolos Kovalivka |
| 2024-06-06 | €600k | Kolos Kovalivka |
| 2024-12-17 | €600k | Kolos Kovalivka |
| 2025-06-10 | €600k | Kolos Kovalivka |
| 2025-12-18 | €500k | Kolos Kovalivka |
| 2026-06-02 | €500k | Kolos Kovalivka |
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
- +0.256
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 →Premier Liha414 players · median €400k
Valued above 52% of the 414 Premier Liha players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 16% of the 1,687 midfielders.
See them in the Explorer →Where Demchenko appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- StepanenkoDMKolos Kovalivka · Premier Liha€500k
- ChachuaAMKarpaty Lviv · Premier Liha€500k
- TopalovLWShakhtar Donetsk · Premier Liha€500k
- PutryaRBLNZ Cherkasy · Premier Liha€500k
- MilnerCMBrighton & Hove Albion · midfielders€500k
- MoutinhoCMSC Braga · midfielders€500k
- HöflerDMSC Freiburg · midfielders€500k
- DelaneyCMFC Copenhagen · midfielders€500k
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).