FairValue

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Sergiy

Sydorchuk

DMUkraine · KVC Westerlo

№ 124182Emerging €108k +0.84

Player dossierPro League

SergiySydorchuk

DMDefensive MidfieldMidfield

Club
KVC Westerlo
League
Pro League
Nationality
Ukraine
Age
35
Height
189 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Sydorchuk at €250k. Model A, which never saw Sydorchuk during training, estimates €108k: the market value is 132% above that estimate.

That is a factor of ×2.32. 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 €184k, 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.

▲ +0.84A €108k▲ +0.31B €184k
Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).
Apps
27
Minutes
652
Goals
0
Assists
1
Started
6/27
Min / app
24
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 Sydorchuk…

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 €250k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €250kModel A €108k

Asking 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

Sergiy Sydorchuk's percentiles among midfielders: Goals per 90 10th, Assists per 90 67th, Minutes, two years 5th, Starts 2nd, Minutes, last 365 days 8th, European club minutes 30th10thGoals67thAssists5thMinutes2ndStarts8thRecent30thEurope

Dashed ring: the midfielder median (50th percentile)

Assists per 90

Club assists per 90 minutes in the same window.

0.14 this player0.09 midfielder median67th percentile

0.00peer deciles · median line · this player ●0.74

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
€75k
Jan 2010
Peak
€5M
Dec 2021
Model target
€250k
Jun 2026
Valuations
38
3 club changes
Jun 2026€250kKVC WesterloValuation the model is trained to reproduce

Jun 2026: €250k, KVC Westerlo. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2010-01-20€75kMetalurg Zaporizhya
2010-02-17€150kMetalurg Zaporizhya
2010-08-25€150kMetalurg Zaporizhya
2011-01-01€300kMetalurg Zaporizhya
2011-10-18€150kMetalurg Zaporizhya
2012-07-02€400kMetalurg Zaporizhya
2013-06-17€800kDynamo Kyiv II
2014-01-02€1.5MDynamo Kyiv
2014-06-30€1.5MDynamo Kyiv
2014-12-25€2.5MDynamo Kyiv
2015-06-07€3.5MDynamo Kyiv
2015-12-18€4MDynamo Kyiv
2016-06-01€4.5MDynamo Kyiv
2016-07-21€4.5MDynamo Kyiv
2017-01-03€4.5MDynamo Kyiv
2017-06-26€4.5MDynamo Kyiv
2018-01-12€4MDynamo Kyiv
2018-08-06€3.5MDynamo Kyiv
2018-12-10€4.5MDynamo Kyiv
2019-06-20€4.5MDynamo Kyiv
2020-01-08€4.5MDynamo Kyiv
2020-04-08€3.5MDynamo Kyiv
2020-09-04€3.5MDynamo Kyiv
2021-01-14€3.5MDynamo Kyiv
2021-05-27€4MDynamo Kyiv
2021-12-20€5MDynamo Kyiv
2022-05-18€5MDynamo Kyiv
2022-12-06€4MDynamo Kyiv
2023-06-21€3MDynamo Kyiv
2023-10-23€2.5MKVC Westerlo
2023-12-19€2.2MKVC Westerlo
2024-06-04€2MKVC Westerlo
2024-10-02€1.5MKVC Westerlo
2024-12-11€1MKVC Westerlo
2025-03-26€700kKVC Westerlo
2025-06-12€500kKVC Westerlo
2025-12-10€300kKVC Westerlo
2026-06-04€250kKVC Westerlo

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
+0.842

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 1% of the 350 Pro League players.

€100k€750k€5M€30M€250kSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 5% of the 1,687 midfielders.

€20k€200k€2M€20M€250kSee them in the Explorer →

Where Sydorchuk appears

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

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).