Winnik Filho, Sergio
Current rating: 1614
Record: 9-3-1
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Da Silva Carvalho, Jean Paul (1500) | Won 2-0 | +181518 |
| 2sealed | 78 | Klippel Vaz, Peterson (1518) | Won 2-0 | +181536 |
| 3sealed | 27 | Casatti, Vagner William (1614) | Lost 0-2 | -171519 |
| 4sealed | 92 | Rios, Roque (1518) | Won 2-1 | +181537 |
| 5sealed | 38 | Gabrenja, Matias (1793) | Won 2-1 | +231560 |
| 6sealed | 13 | Brito, Wesley (1519) | Draw 1-1 | -11559 |
| 7sealed | 32 | Ardanza, Lucas (1535) | Won 2-1 | +181577 |
| 8rochester | 32 | Portugal, Daniel (1541) | Lost 0-2 | -191558 |
| 9rochester | 31 | Pereira, Ivan (1556) | Lost 0-2 | -181540 |
| 10rochester | 29 | Rodrigues, Matheus (1541) | Won 2-0 | +181558 |
| 11rochester | 24 | Dominguez, Alejandro (1555) | Won 2-0 | +181576 |
| 12rochester | 17 | Silveira, Robson (1522) | Won 2-1 | +171593 |
| 13rochester | 2 | Svaldi, Guilherme (1748) | Won 2-1 | +211614 |
| average opponent: 1574record: 9-3-1 | new rating: 1614 | |||