Max Itso Martins,
Current rating: 1516
Record: 5-4
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 74 | Padetti, Marcelo Mochida (1532) | Lost 1-2 | -171483 |
| 2standard | 182 | Lucas Viana Martinez, (1482) | Won 2-0 | +181501 |
| 3standard | 148 | De Albuquerque Silva, Rodrigo (1501) | Won 2-0 | +181519 |
| 4standard | 170 | Oliveira de Paiva, Rhodner (1433) | Lost 0-2 | -201499 |
| 5standard | 162 | Luiz Fernando Martins, (1500) | Lost 1-2 | -181481 |
| 6standard | 232 | Carballo, Jorge (1488) | Won 0-0 | +181499 |
| 7standard | 167 | Kayaki, Luciano (1440) | Won 2-1 | +171516 |
| 8standard | 133 | Paredes, Marcos (1519) | Lost 1-2 | -181498 |
| 9standard | 102 | Miguel L Pinheiro, (1483) | Won 2-1 | +181516 |
| average opponent: 1486record: 5-4 | new rating: 1516 | |||