Roeck, Gabriel K
Current rating: 1519
Record: 4-3
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Mello, Adriano (1500) | Won 2-0 | +181518 |
| 2sealed | 77 | Camara, Aristides (1508) | Won 2-1 | +181536 |
| 3sealed | 33 | Seratti, Agustin (1484) | Lost 0-2 | -191517 |
| 4sealed | 65 | Moura Nakamura, Daniel (1517) | Lost 0-2 | -181499 |
| 5sealed | 102 | Massaro, Luis (1632) | Won 2-1 | +201519 |
| 6sealed | 80 | Brito, Andre (1518) | Won 2-1 | +181537 |
| 7sealed | 51 | Teixeira Junior, Edson (1534) | Lost 0-2 | -181519 |
| average opponent: 1528record: 4-3 | new rating: 1519 | |||