Rodrigues, William
Current rating: 1501
Record: 3-3
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Gimenes, Diego (1543) | Won 2-1 | +191519 |
| 2sealed | 67 | Walter, Joaquin (1518) | Lost 1-2 | -181501 |
| 3sealed | 122 | Chemale, Yuri (1500) | Won 2-1 | +181519 |
| 4sealed | 82 | Uehara, Pedro Henrique (1518) | Lost 1-2 | -181501 |
| 5sealed | 98 | Puhl, Mauro (1499) | Lost 1-2 | -181483 |
| 6sealed | 101 | Calcas Neto, Thiago (1498) | Won 2-1 | +181501 |
| average opponent: 1513record: 3-3 | new rating: 1501 | |||