Sergiy Boyko

Sergiy Boyko, Ukraine

CONFIDENCEB

SAMPLE12matches

CORE COVERAGE100%

WINDOW2026-10-07

REFEREE DNA · 7 DIMENSIONSreferee-dna-v0.1-research

Foul calling6

Fouls called per match relative to referee peers.

Discipline intensity22

Card points per match, with yellow = 1 and red = 3.

Red-card tendency54

Observed red cards per match relative to peers.

Card escalation50

Card points per 20 co-observed fouls.

Late discipline76

Share of observed cards shown from minute 75 onward.

Home-card differential58

Home minus away card points per match. This is an observed differential, not a bias label.

Discipline volatility42

Match-to-match variability in total card points.

EVIDENCE & INTERPRETATIONwhat the profile can and cannot say

Observed cards

40 card events across 12 observed matches; 2 red-card events.

Observed fouls

232 total fouls across 12 matches with complete foul statistics.

Home-card differential

A signed disciplinary difference only. It does not establish intent, favoritism or referee bias.

Peer context

Percentiles compare this referee only with eligible referees in Major League Soccer 2026.

LINEAGEreferee-specific immutable evidence manifest

MODEL: referee-dna-v0.1-research
WINDOW END: 2026-10-07
MANIFEST: referee-source-manifest-v0.1
SOURCE SHA-256: b0475bdc875fc7260aeb60bcf684e622c0919a4d6d0b2112dbb240ab40455693