Alonso Prado,
Current rating: 1466
Record: 3-5
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 81 | Lambert Maniezzo, Marcel Filipe (1518) | Lost 1-2 | -181482 |
| 3standard | 217 | Rodrigo Chiossi, (1500) | Won 2-1 | +191501 |
| 4standard | 172 | Pacheco, Marcus (1518) | Lost 0-2 | -181483 |
| 5standard | 243 | ANTONIO CARLOS Lourenco, (1500) | Lost 1-2 | -181465 |
| 6standard | 231 | Veiga, Marco (1483) | Won 0-0 | +191484 |
| 7standard | 150 | Naganawa, Luciano (1499) | Won 2-0 | +181502 |
| 8standard | 115 | Ceccato, Leonardo (1518) | Lost 1-2 | -181484 |
| 9standard | 109 | MACRINA, VICENTE (1486) | Lost 0-2 | -181466 |
| average opponent: 1503record: 3-5 | new rating: 1466 | |||