ANTONIO CARLOS Lourenco,
Current rating: 1499
Record: 4-4
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 20 | Kolesnikovas Castro, Diego (1500) | Won 2-0 | +181518 |
| 2standard | 65 | Yuri Santana, (1518) | Won 2-1 | +181536 |
| 3standard | 25 | Giucci, Leonardo (1536) | Lost 1-2 | -181518 |
| 4standard | 145 | Alex Alves da Silva Bo, (1501) | Lost 1-2 | -181500 |
| 5standard | 243 | Alonso Prado, (1483) | Won 2-1 | +171517 |
| 6standard | 113 | Pedro Henrique Boujadi, (1518) | Won 0-0 | +181535 |
| 7standard | 78 | Ilario Medeiros, Washington (1535) | Lost 1-2 | -181517 |
| 8standard | 129 | Marcelo Marcelo, (1506) | Lost 1-2 | -181499 |
| average opponent: 1512record: 4-4 | new rating: 1499 | |||