Jonas W. Dobinco,
Current rating: 1429
Record: 0-4
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 175 | Braz Pereira, Vinicius (1500) | Lost 0-2 | -181482 |
| 2standard | 174 | dos Santos, Felipe Roberto (1483) | Lost 0-2 | -181464 |
| 3standard | 252 | Aparicio, Ramiro (1499) | Lost 0-2 | -171447 |
| 4standard | 302 | Menna, Sergio (1446) | Lost 0-2 | -181429 |
| average opponent: 1482record: 0-4 | new rating: 1429 | |||