Duda Silva,
Current rating: 1465
Record: 2-4
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 62 | miguel salgado, (1500) | Won 2-1 | +181518 |
| 2standard | 116 | Ferry, Sergio (1569) | Won 2-0 | +191537 |
| 3standard | 89 | De Souza Santos, Jose (1536) | Lost 1-2 | -181519 |
| 4standard | 105 | Antunes, Antonio (1519) | Lost 0-2 | -181501 |
| 5standard | 160 | Naganawa, Luciano (1499) | Lost 1-2 | -181483 |
| 6standard | 220 | Nery Neto, Hernany (1483) | Lost 0-0 | -181465 |
| average opponent: 1518record: 2-4 | new rating: 1465 | |||