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Piero Maza
ChileReferee2018–2026Results and referee statistics · All competitions
- 212
- Matches
- 5.98
- Cards/game
- 1 100
- Yellow cards
- 79
- Red cards
- 85
- Penalties
- 9
- Seasons
Data coverage: cards in 197 of 212 matches, fouls in 197, penalties in 194. Averages use only known data.
Career statistics
MP: completed matches · YC: yellow cards · RC: red cards. * Partial coverage. — No data. Per-match values use matches with known data. Open a season row for coverage details.
Progress
6.75
20185.05
20195.33
2020/216.13
20215.57
20225.32
20235.78
20245.06
20255.20
2026Yellow cards per game · scale 0–6.75 · dash = too little data
Then5.82per game · 2018–2022 · 98 matches
Now5.35per game · 2023–2026 · 98 matches
The difference is no larger than chance can explain.
Season by season, with sample sizes
| Season | Competition | Matches | With data | Yellow cards | Per game |
|---|---|---|---|---|---|
| 2018 | Primera División | 24 | 24 | 162 | 6.75 |
| 2019 | CONMEBOL Sudamericana | 2 | 2 | 9 | 4.50 |
| 2019 | CONMEBOL Libertadores | 4 | 4 | 14 | 3.50 |
| 2019 | Primera División | 14 | 14 | 78 | 5.57 |
| 2019/20 | Copa Chile | 1 | 0 | — | — |
| 2020/21 | CONMEBOL Sudamericana | 1 | 1 | 6 | 6.00 |
| 2020/21 | CONMEBOL Libertadores | 2 | 2 | 8 | 4.00 |
| 2020/21 | Primera División | 7 | 5 | 26 | 5.20 |
| 2020 | Copa Chile | 1 | 1 | 8 | 8.00 |
| 2021 | CONMEBOL Sudamericana | 3 | 3 | 15 | 5.00 |
| 2021 | CONMEBOL Libertadores | 3 | 2 | 13 | 6.50 |
| 2021 | Primera División | 9 | 9 | 57 | 6.33 |
| 2021/22 | Pro League | 2 | 2 | 13 | 6.50 |
| 2022 | CONMEBOL Sudamericana | 7 | 7 | 46 | 6.57 |
| 2022 | CONMEBOL Libertadores | 5 | 5 | 26 | 5.20 |
| 2022 | Primera División | 18 | 16 | 85 | 5.31 |
| 2022 | Copa Chile | 3 | 1 | 6 | 6.00 |
| 2022 | CONMEBOL–UEFA Cup of Champions | 1 | 1 | 4 | 4.00 |
| 2023 | CONMEBOL Sudamericana | 4 | 4 | 23 | 5.75 |
| 2023 | CONMEBOL Libertadores | 4 | 4 | 22 | 5.50 |
| 2023 | Primera División | 14 | 14 | 82 | 5.86 |
| 2023 | Copa Chile | 3 | 0 | — | — |
| 2023/24 | Pro League | 1 | 1 | 1 | 1.00 |
| 2023 | FIFA World Cup qualification | 2 | 2 | 5 | 2.50 |
| 2024 | CONMEBOL Sudamericana | 4 | 4 | 26 | 6.50 |
| 2024 | CONMEBOL Libertadores | 6 | 6 | 39 | 6.50 |
| 2024 | Primera División | 11 | 11 | 65 | 5.91 |
| 2024/24 | King's Cup | 1 | 0 | — | — |
| 2024 | Copa América | 3 | 3 | 10 | 3.33 |
| 2024 | FIFA World Cup qualification | 3 | 3 | 16 | 5.33 |
| 2025 | CONMEBOL Sudamericana | 2 | 2 | 7 | 3.50 |
| 2025 | CONMEBOL Libertadores | 11 | 11 | 45 | 4.09 |
| 2025 | Primera División | 16 | 16 | 102 | 6.38 |
| 2025 | Copa Chile | 1 | 0 | — | — |
| 2025 | FIFA World Cup qualification | 2 | 2 | 3 | 1.50 |
| 2026 | CONMEBOL Sudamericana | 1 | 1 | 6 | 6.00 |
| 2026 | CONMEBOL Libertadores | 3 | 3 | 16 | 5.33 |
| 2026 | Primera División | 11 | 10 | 52 | 5.20 |
| 2026 | Copa Chile | 1 | 0 | — | — |
| 2026 | Friendly | 1 | 1 | 4 | 4.00 |