Bruna, Guillermo Joel
Current rating: 1530
Record: 12-10-1
| Regional Championships Santiago 2023 Cycle 3 (pioneer) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 10 | Delgado, Victor (1523) | Lost 1-2 | -181501 |
| 2pioneer | 11 | Valdes, Cristian (1375) | Won 2-0 | +151516 |
| 3pioneer | 40 | Cortes, Ricardo (1445) | Won 2-1 | +171533 |
| 4pioneer | 30 | Vergara, Pablo (1484) | Won 2-1 | +171550 |
| 5pioneer | 15 | Fernandez, Jose Ignacio (1492) | Won 2-1 | +171567 |
| 6pioneer | 4 | Paredes Rivera, Freddy (1591) | Lost 1-2 | -181549 |
| 7pioneer | 30 | Maturana, Cristopher (1476) | Lost 1-2 | -191530 |
| top | average opponent: 1484record: 4-3 | new rating: 1530 | ||
| Regional Championships Santiago 2022 (pioneer) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 16 | Duque Zuluaga, Andre Mauricio (1500) | Won 2-0 | +181557 |
| 2pioneer | 42 | Leal, Alex (1499) | Won 2-1 | +171574 |
| 3pioneer | 18 | Bedoya, Andres (1574) | Lost 1-2 | -181556 |
| 4pioneer | 65 | Munoz, Mario (1573) | Lost 1-2 | -181538 |
| 5pioneer | 17 | Robot, Blue (1506) | Lost 1-2 | -191519 |
| 6pioneer | 60 | munoz, julian (1483) | Won 2-0 | +181537 |
| 7pioneer | 38 | Roca Suarez, Diego (1526) | Lost 0-2 | -181519 |
| top | average opponent: 1523record: 3-4 | new rating: 1519 | ||
| Grand Prix Santiago 2016 (KLD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 17 | Richardson, David (1533) | Won 2-1 | +191519 |
| 2standard | 33 | Funte, Juan (1518) | Lost 0-2 | -181501 |
| 3standard | 238 | Garrido, Camilo (1458) | Lost 1-2 | -191482 |
| 4standard | 264 | Martinez F, Ricardo (1472) | Won 2-1 | +181500 |
| 5standard | 267 | Orellana, Jose (1483) | Won 2-0 | +171517 |
| 6standard | 145 | Ferro Valdivia, Daniel (1693) | Won 2-0 | +221539 |
| 7standard | 93 | Astorga Pasten, Pablo (1569) | Draw 1-1 | 01539 |
| 8standard | 114 | Merril Silva, Daniel (1506) | Won 0-0 | +171556 |
| 9standard | 66 | Solar, Juan (1607) | Lost 0-2 | -171539 |
| top | average opponent: 1538record: 5-3-1 | new rating: 1539 | ||