Duffort, Gaston
Current rating: 1481
Record: 3-4
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 25 | Douglas Lino De Araujo, (1500) | Won 2-0 | +181518 |
| 2standard | 14 | Elizalde, Victor (1445) | Lost 1-2 | -191499 |
| 3standard | 146 | Argimon, Ivan (1483) | Lost 1-2 | -191480 |
| 4standard | 252 | Richard D Brito, (1482) | Won 2-0 | +181498 |
| 5standard | 164 | Freitas, Fernando Luiz (1500) | Won 2-0 | +181516 |
| 6standard | 117 | Otarola, Juan (1551) | Lost 0-0 | -171499 |
| 7standard | 166 | Ceccato, Leonardo (1500) | Lost 0-2 | -181481 |
| average opponent: 1495record: 3-4 | new rating: 1481 | |||