ChileMatches analysed: 1132023–2026Piero Maza: referee stats
Piero Maza (Chile) has shown 5.86 cards per game in 113 analysed matches — +10% compared with the average of the same leagues. Profile: strict.
Strict · +10%Upcoming matches with Piero Maza
Referee radar
Percentile among 2950 referees with at least 15 matches; 50 = typical referee. Each axis compares the referee with the average of the leagues where this referee officiates.
Cards per match (last 20 matches)
Piero Maza by competition
| Competition | Matches | Cards/g | League avg | vs league | Penalty | Red card |
|---|---|---|---|---|---|---|
 Primera División | 52 | 6.54 | 5.74 | +12% | 37% | 44% |
| CONMEBOL Libertadores | 24 | 5.29 | 5.18 | +2% | 17% | 13% |
| CONMEBOL Sudamericana | 15 | 5.53 | 4.97 | +7% | 7% | 40% |
| World Cup - Qualification South America | 7 | 3.71 | 4.08 | −4% | 29% | 29% |
| Primera B | 7 | 7.00 | 5.37 | +14% | 43% | 43% |
| Copa America | 3 | 3.67 | 4.06 | −2% | 33% | 33% |
| World Cup - U20 | 2 | 5.50 | 3.54 | +8% | 0% | 50% |
| Copa Chile | 1 | 5.00 | 4.44 | +1% | 0% | 0% |
 Pro League | 1 | 1.00 | 4.09 | −7% | 0% | 0% |
| CONMEBOL Recopa | 1 | 9.00 | 9.00 | +0% | 0% | 100% |
Last matches refereed by Piero Maza
| Date | Match | Score | Cards (home–away) | Fouls | Pen. |
|---|---|---|---|---|---|
| Wed 9 Sept | Boca Juniors – Sao PauloCONMEBOL Sudamericana | 1:0 | 2 | 14 | 0 |
| Sat 5 Sept | Concepción – A. ItalianoPrimera División | 0:1 | 5 | 25 | 0 |
| Sun 23 Aug | D. La Serena – CobresalPrimera División | 3:3 | 5 | 25 | 0 |
| Sun 16 Aug | Everton de Vina – A. ItalianoPrimera División | 1:1 | 10+ | — | 1 |
| Tue 11 Aug | Boca Juniors – Deportivo RecoletaCONMEBOL Sudamericana | 3:1 | 6 | 19 | 0 |
| Mon 10 Aug | Universidad de Chile – PalestinoPrimera División | 2:1 | 2 | 23 | 1 |
| Thu 30 Jul | Gremio – BolívarCONMEBOL Sudamericana | 0:1 | 7 | 25 | 0 |
| Wed 22 Jul | Independiente Medellin – Vasco DA GamaCONMEBOL Sudamericana | 2:2 | 2 | 21 | 0 |
| Fri 19 Jun | Universidad de Chile – O'HigginsPrimera División | 2:0 | 7 | 20 | 0 |
| Mon 18 May | Concepción – Everton de VinaPrimera División | 0:2 | 3 | 16 | 1 |
| Fri 8 May | Junior – Cerro PortenoCONMEBOL Libertadores | 0:1 | 4 | 23 | 0 |
| Sat 25 Apr | A. Italiano – Deportes LimachePrimera División | 2:2 | 5 | 18 | 1 |
| Sat 4 Apr | Everton de Vina – NublensePrimera División | 0:0 | 7 | 18 | 0 |
| Sat 28 Mar | D. Puerto Montt – Santiago WanderersPrimera B | 0:2 | 7 | — | 0 |
| Wed 11 Mar | Botafogo – Barcelona SCCONMEBOL Libertadores | 0:1 | 6 | 14 | 0 |
How the numbers are calculated
Cards = yellow and red cards shown to players during 90 minutes (a second yellow counts as a yellow plus a red, as most bookmakers settle). Cards for coaches and substitutes on the bench and cards in extra time are excluded. Penalties = penalties awarded during the match (shoot-outs excluded). “vs league” compares the referee with the average of the exact league seasons this referee worked, so a referee from a card-heavy league is not called strict just because of the league.
Data: official match events and statistics (API-Sports), updated daily.
Frequently asked questions
How many cards does Piero Maza give per game?
On average 5.86 cards per game in 113 analysed matches (league average in the same competitions: 5.31).
Is Piero Maza a strict referee?
Compared with the leagues where Piero Maza officiates, the card count is +10% – profile: strict. A red card appeared in 35% of these matches.
How often do matches with Piero Maza go over 4.5 cards?
Over 4.5 cards in 70% of matches and over 3.5 cards in 81%. Both teams were booked in 89%.
Does Piero Maza give many penalties?
A penalty was awarded in 27% of matches refereed by Piero Maza.