Mariana Mary,
Current rating: 1444
Record: 3-6
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 148 | Newton Terada Horimuti, (1500) | Won 2-1 | +181518 |
| 2standard | 118 | Waiss Pulvirenti, Eduardo (1518) | Lost 1-2 | -181500 |
| 3standard | 189 | Luiz Fernando Martins, (1500) | Lost 0-2 | -181482 |
| 4standard | 257 | victor fernandes, (1484) | Lost 0-2 | -181464 |
| 5standard | 267 | Cazzarotti de Oliveira, Pedro Henrique (1464) | Won 2-0 | +181482 |
| 6standard | 210 | dos Santos, Felipe Roberto (1482) | Lost 0-0 | -181464 |
| 7standard | 196 | Leonardo Henrique Trez, (1465) | Won 2-0 | +181482 |
| 8standard | 152 | Kayaki, Luciano (1423) | Lost 0-2 | -191463 |
| 9standard | 115 | ivens fernandes neto, (1411) | Lost 0-2 | -191444 |
| average opponent: 1472record: 3-6 | new rating: 1444 | |||