Aurelio Costa Barbosa,
Current rating: 1554
Record: 6-3
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 491 | Koiti Hasunuma, Marcelo (1500) | Won 2-0 | +181518 |
| 2standard | 278 | Cesar Dolacio, Marcelo (1518) | Lost 1-2 | -181500 |
| 3standard | 284 | Brugnaro Jardim, Luis Fernando (1500) | Won 2-0 | +181518 |
| 4standard | 267 | Silva Freitas, Jeferson (1532) | Won 2-0 | +181536 |
| 5standard | 91 | Osorio Parot, Javier (1561) | Lost 1-2 | -171519 |
| 6standard | 281 | Conceicao Doile, Leonardo (1506) | Lost 1-2 | -191500 |
| 7standard | 322 | de Abreu Freitas, Alex (1500) | Won 2-0 | +181518 |
| 8standard | 209 | Albuquerque, Saulo (1519) | Won 2-0 | +181536 |
| 9standard | 185 | Hananias, Hugo (1488) | Won 2-1 | +181554 |
| average opponent: 1514record: 6-3 | new rating: 1554 | |||