Gustavo Aranha Rodrigu,
Current rating: 1483
Record: 2-3
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 110 | Massaro, Luis (1612) | Lost 0-2 | -161484 |
| 2standard | 248 | Marcos Antonio Lima, (1482) | Won 2-0 | +181502 |
| 3standard | 229 | Dannemann, Joao Manoel (1465) | Lost 0-2 | -191483 |
| 4standard | 241 | Garcia, Mario G (1483) | Lost 0-2 | -181465 |
| 5standard | 258 | Yamaguchi, Thiago Rogerio (1463) | Won 2-1 | +181483 |
| average opponent: 1501record: 2-3 | new rating: 1483 | |||