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Referee profile

Piero Maza

  • Chile
  • 223 matches officiated
Matches officiated
223
career total (source)
Yellow cards / match
5.60
1,249 yellow in total
Reds / match
0.44
54 red · 44 second yellow
Yellow / match, recent
3.58
12 matches · red 0.83

Last 12 months

32 matches since 4 Nov 2025, compared with the average referee

All referees
Last 12 months
MetricPiero MazaAverageDifference from average
Yellow cards / match 4.25 3.99 +7%
Red cards / match 0.78 0.21 +269%
Penalty goals / match 0.25 0.23 +9%
Goals / match 2.50 2.79 −10%
Home wins 31% 44% −29%
Draws 34% 25% +36%

Ranked 386 of 1119 referees for yellow cards (1 = strictest).

Match results

By league

  1. 1 Liga de Primera 3.13 goals · 4.81 yellows / match 16 matches
  2. 2 CONMEBOL Libertadores 1.88 goals · 4.00 yellows / match 8 matches
  3. 3 CONMEBOL Sudamericana 1.71 goals · 3.29 yellows / match 7 matches
  4. 4 International Friendly Games 3.00 goals · – yellows / match 1 match
The data source is currently unreachable.

Cards per match

Recent matches (oldest to newest); the dashed line is the career average. Click a bar to open the match.

Yellow cardsRed cardsCareer avg.
0 2 4 6 8 USA – Germany · 6 Jun 2026 · Yellow cards 4, Red cards 0 4 6 JunUSA–GER Universidad de Chile – O'Higgins · 19 Jun 2026 · Yellow cards 5, Red cards 1 6 Independiente Medellín – Vasco da Gama · 23 Jul 2026 · Yellow cards 2, Red cards 0 2 23 JulDIM–VAS Grêmio – Bolívar · 31 Jul 2026 · Yellow cards 4, Red cards 3 7 Universidad de Chile – Palestino · 10 Aug 2026 · Yellow cards 2, Red cards 0 2 10 AugUDC–PAL Boca Juniors – Recoleta FC · 12 Aug 2026 · Yellow cards 3, Red cards 2 5 Everton de Viña del Mar – Audax Italiano · 16 Aug 2026 · Yellow cards 8, Red cards 1 9 16 AugEVT–AUD Deportes La Serena – Cobresal · 23 Aug 2026 · Yellow cards 5, Red cards 0 5 Deportes Concepción – Audax Italiano · 5 Sep 2026 · Yellow cards 4, Red cards 1 5 5 SepDCO–AUD Boca Juniors – São Paulo · 9 Sep 2026 · Yellow cards 2, Red cards 0 2 Boca Juniors – Vasco da Gama · 14 Oct 2026 · Yellow cards 4, Red cards 1 5 14 OctBOC–VAS Palestino – Colo-Colo · 25 Oct 2026 · Yellow cards 0, Red cards 1 1 25 OctPAL–CC 5.6

League breakdown

Competitions of the last 12 matches

Liga de Primera 6 6 matches · 4.0 yellow/match
CONMEBOL Sudamericana 5 5 matches · 3.0 yellow/match
International Friendly Games 1 1 matches · 4.0 yellow/match

Recent matches

FT 25 Oct Palestino Colo-Colo 1 1
Liga de Primera 0 1
FT 14 Oct Boca Juniors Vasco da Gama 0 1
CONMEBOL Sudamericana 4 1
FT 9 Sep Boca Juniors São Paulo 1 0
CONMEBOL Sudamericana 2 0
FT 5 Sep Deportes Concepción Audax Italiano 0 1
Liga de Primera 4 1
FT 23 Aug Deportes La Serena Cobresal 3 3
Liga de Primera 5 0
FT 16 Aug Everton de Viña del Mar Audax Italiano 1 1
Liga de Primera 8 1
FT 12 Aug Boca Juniors Recoleta FC 3 1
CONMEBOL Sudamericana 3 2
FT 10 Aug Universidad de Chile Palestino 2 1
Liga de Primera 2 0
FT 31 Jul Grêmio Bolívar 0 1
CONMEBOL Sudamericana 4 3
FT 23 Jul Independiente Medellín Vasco da Gama 2 2
CONMEBOL Sudamericana 2 0
FT 19 Jun Universidad de Chile O'Higgins 2 0
Liga de Primera 5 1
FT 6 Jun USA Germany 1 2
International Friendly Games 4 0

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