Ventura, Roberto
Current rating: 1538
Record: 7-5-1
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 89 | Rodrigues, Matheus (1500) | Draw 1-1 | 01518 |
| 2sealed | 90 | da Silva Buritizal, Murilo (1500) | Won 2-0 | +171535 |
| 3sealed | 51 | Lontra, Marcus (1482) | Won 2-1 | +171552 |
| 4sealed | 41 | Balado Bradarich, Jose Alejandro (1585) | Won 2-0 | +191571 |
| 5sealed | 18 | Caligaris, Gabriel (1751) | Lost 0-2 | -151556 |
| 6sealed | 46 | dos Santos Passos, Ronei (1572) | Lost 1-2 | -181538 |
| average opponent: 1565record: 3-2-1 | new rating: 1538 | |||
| Grand Prix Curitiba 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 56 | Ferrari, Daniel (1500) | Lost 0-2 | -181482 |
| 2extended | 84 | Sternadt, Augusto Klein (1482) | Won 0-0 | +181500 |
| 3extended | 72 | da Fonseca, Bruno (1500) | Won 2-1 | +181518 |
| 4extended | 101 | Malvez Vendramin, Luis Gustavo (1517) | Lost 0-2 | -181500 |
| 5extended | 127 | Hashimoto, Leonardo S (1499) | Won 2-0 | +181518 |
| 6extended | 67 | Pereira Melo Jr., Adilson (1519) | Won 2-0 | +181536 |
| 7extended | 68 | Machado, Allan Schlichting (1535) | Lost 0-2 | -181518 |
| average opponent: 1507record: 4-3 | new rating: 1518 | |||