Roberto Bueno Fistarol,
Current rating: 1498
Record: 4-4-1
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 10 | Coutinho, Thiago (1500) | Won 2-0 | +181518 |
| 2standard | 36 | Paiva Luquez, Gustavo (1519) | Won 2-1 | +181536 |
| 3standard | 82 | Quintas, Mario (1534) | Won 2-1 | +181554 |
| 4standard | 61 | Oliveira Dantas, Saulo (1538) | Lost 1-2 | -181536 |
| 5standard | 139 | Carneiro, Jean Carlos (1518) | Lost 0-2 | -191517 |
| 6standard | 135 | Barbosa, Osvaldo (1502) | Lost 0-0 | -181499 |
| 7standard | 180 | De Freitas, Raphael Julio (1499) | Draw 1-1 | 01499 |
| 8standard | 138 | Zaghi, Rafael (1467) | Lost 1-2 | -181481 |
| 9standard | 110 | Pedro Paulo Brockveld, (1464) | Won 2-0 | +171498 |
| average opponent: 1505record: 4-4-1 | new rating: 1498 | |||