Sergiy
Korniychuk
LBUkraine · NK Veres Rivne
Player dossierPremier Liha
SergiyKorniychuk
LBLeft-BackDefender
- Club
- NK Veres Rivne
- League
- Premier Liha
- Nationality
- Ukraine
- Age
- 21
- Height
- 180 cm
- Foot
- Left
- Valued
- 2 Jun 2026
Reading the valuation
The market values Korniychuk at €150k. Model A, which never saw Korniychuk during training, estimates €341k: the market value is 56% below that estimate.
That is a factor of ×2.28. 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 €955k, 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
- 16
- Minutes
- 664
- Goals
- 0
- Assists
- 0
- Started
- 7/16
- Min / app
- 42
- Cards
- 4Y 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 Korniychuk…
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 €150k
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.
10% this player0% defender median72nd 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
- €10k
- Dec 2023
- Peak
- €150k
- Jun 2024
- Model target
- €150k
- Jun 2026
- Valuations
- 7
- 3 club changes
Jun 2026: €150k, NK Veres Rivne. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2023-12-11 | €10k | MFC Metalurg Zaporizhya |
| 2024-03-18 | €100k | FC Minaj |
| 2024-06-06 | €150k | FC Minaj |
| 2024-12-17 | €100k | Polissya Zhytomyr |
| 2025-06-10 | €100k | Polissya Zhytomyr |
| 2025-12-18 | €150k | NK Veres Rivne |
| 2026-06-02 | €150k | NK Veres Rivne |
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
- −0.823
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 4% of the 414 Premier Liha players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 3% of the 2,065 defenders.
See them in the Explorer →Where Korniychuk appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- ShevchenkoGKFC Oleksandriya · Premier Liha€150k
- KovaletsAMEpicentr Kamyanets-Podilskyi · Premier Liha€150k
- MedynskyiRWObolon Kyiv · Premier Liha€150k
- KlishchukGKKarpaty Lviv · Premier Liha€150k
- OdoiCBNAC Breda · defenders€150k
- LampropoulosCBOFI Crete · defenders€150k
- KolodziejczakCBParis FC · defenders€150k
- MarinakisRBOFI Crete · defenders€150k
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).