Mathias Cavalcanti De Albuqu,
Current rating: 1481
Record: 3-4
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | Manzoni, Pedro (1500) | Won 2-0 | +181518 |
| 2sealed | 24 | Gallo, Rocco (1500) | Lost 0-1 | -181500 |
| 3sealed | 102 | Pauly Fernandes, Francisco (1432) | Won 2-0 | +161516 |
| 4sealed | 62 | Righetti, Nicolas (1518) | Lost 1-2 | -181498 |
| 5sealed | 112 | Seisdedos, Jose Luis Antonio (1513) | Lost 1-2 | -171481 |
| 6sealed | 104 | Andre Carvalho Rodrigues, Ba (1480) | Won 2-0 | +181499 |
| 7sealed | 79 | Leonardo Paiva Nunes, Silton (1499) | Lost 0-2 | -181481 |
| average opponent: 1492record: 3-4 | new rating: 1481 | |||