Prudencio, Joao Fernandes
Current rating: 1517
Record: 4-3
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Martins, Jose (1516) | Won 2-1 | +181518 |
| 2sealed | 25 | Vasques, Fabio (1518) | Lost 1-2 | -181500 |
| 3sealed | 105 | Bigalli, Federico (1500) | Won 2-1 | +181518 |
| 4sealed | 67 | Espinosa, Leonardo (1482) | Lost 0-2 | -181500 |
| 5sealed | 91 | Lautert, Marcio (1499) | Won 2-1 | +181518 |
| 6sealed | 63 | Moura Nakamura, Daniel (1516) | Won 2-1 | +181536 |
| 7sealed | 34 | Wohlers, Renato (1508) | Lost 0-2 | -191517 |
| average opponent: 1506record: 4-3 | new rating: 1517 | |||