Chiu Mariano da Silva, Marcos Alexandre
Current rating: 1506
Record: 6-6
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 166 | De Sousa Leao, Leandro (1517) | Lost 1-2 | -181483 |
| 2sealed | 233 | Samuel, Rubem (1483) | Won 2-0 | +181501 |
| 3sealed | 123 | Borges, Eduardo (1803) | Won 2-1 | +241525 |
| 4sealed | 118 | Porcino, Rodrigo (1519) | Won 2-0 | +181543 |
| 5sealed | 114 | Estrela, Marcos (1536) | Lost 0-2 | -181525 |
| 6sealed | 120 | Jachelli, Thiago (1518) | Lost 0-2 | -191506 |
| average opponent: 1563record: 3-3 | new rating: 1506 | |||
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 73 | Vinicius N De Gerard, (1500) | Lost 0-2 | -181482 |
| 3standard | 225 | Fratantonio, Paulo Cesar (1500) | Won 2-1 | +181500 |
| 4standard | 148 | Carvalho, Bernardo (1518) | Lost 0-2 | -171483 |
| 5standard | 203 | Moura Nakamura, Daniel (1483) | Won 2-0 | +181501 |
| 6standard | 114 | Kayo Kiyan, Danilo (1517) | Won 0-0 | +181519 |
| 7standard | 85 | Alvarenga, Rafael (1529) | Lost 0-2 | -181501 |
| average opponent: 1508record: 3-3 | new rating: 1501 | |||