Guilherme Freitas,
Current rating: 1500
Record: 4-4-1
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 67 | Freitas, Fernando Luiz (1500) | Won 2-0 | +181518 |
| 2standard | 57 | Ilario Medeiros, Washington (1517) | Won 2-0 | +181536 |
| 3standard | 94 | Sakita, Luan (1518) | Draw 1-1 | 01536 |
| 4standard | 90 | guilherme v cohen, (1501) | Lost 1-2 | -191517 |
| 5standard | 143 | da Silva Araujo, Fernando Luiz (1537) | Lost 0-2 | -181499 |
| 6standard | 196 | Torres, Arturo (1501) | Won 0-0 | +181517 |
| 7standard | 144 | Goncalves Dos Santos, Rodrigo (1483) | Won 2-1 | +181535 |
| 8standard | 102 | Vianna, Bruno (1614) | Lost 0-2 | -171518 |
| 9standard | 93 | Borges Vilela Junior, Sergio (1517) | Lost 0-2 | -181500 |
| average opponent: 1521record: 4-4-1 | new rating: 1500 | |||