Rafael Sampaio,
Current rating: 1545
Record: 5-3
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 128 | Antonio Vinicino, (1518) | Won 2-0 | +181518 |
| 3standard | 78 | Wiliam Silva De Carval, (1520) | Lost 1-2 | -181500 |
| 4standard | 106 | Ferreira, Paulo Henrique (1555) | Won 2-1 | +191519 |
| 5standard | 52 | De Biasi, Julio (1536) | Won 2-1 | +191538 |
| 6standard | 65 | Nery, Vinicius (1526) | Won 0-0 | +171555 |
| 7standard | 48 | Damo da Rosa, Paulo Vitor (2051) | Won 2-1 | +271582 |
| 8standard | 8 | Sella, Eduardo Liboni (1586) | Lost 1-2 | -181564 |
| 9standard | 43 | de Biazi, Felipe (1522) | Lost 1-2 | -191545 |
| average opponent: 1602record: 5-3 | new rating: 1545 | |||