guilherme vasconcelos,
Current rating: 1482
Record: 2-3
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 43 | Glenio e silva 2 Morei, (1500) | Lost 0-2 | -181482 |
| 2standard | 234 | Rafael Jacobsen, (1482) | Won 2-0 | +181500 |
| 3standard | 100 | Fehr, Gabriel (1501) | Lost 1-2 | -181482 |
| 4standard | 215 | Pereira e Silva, Rodrigo Andre (1482) | Lost 0-2 | -181464 |
| 5standard | 274 | Kim F Santos, (1465) | Won 2-1 | +181482 |
| average opponent: 1486record: 2-3 | new rating: 1482 | |||