Piero Maza

Piero Maza, Chile

CONFIDENCEC

SAMPLE9matches

CORE COVERAGE100%

WINDOW2026-08-23

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

Foul calling64

Fouls called per match relative to referee peers.

Discipline intensity93

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

Red-card tendency93

Observed red cards per match relative to peers.

Card escalation79

Card points per 20 co-observed fouls.

Late discipline64

Share of observed cards shown from minute 75 onward.

Home-card differential21

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

Discipline volatility79

Match-to-match variability in total card points.

EVIDENCE & INTERPRETATIONwhat the profile can and cannot say

Observed cards

55 card events across 9 observed matches; 6 red-card events.

Observed fouls

200 total fouls across 9 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 Primera División 2026.

LINEAGEreferee-specific immutable evidence manifest

MODEL: referee-dna-v0.1-research
WINDOW END: 2026-08-23
MANIFEST: referee-source-manifest-v0.1
SOURCE SHA-256: 99c76c25e5757c0fc99fbea11fa99354b9334f732c3a054d29ad7d8f0275446c