Roger Silveira Costa,
Current rating: 1553
Record: 6-3
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 530 | da Silva Borges, Rafael (1500) | Lost 0-2 | -181482 |
| 2standard | 506 | Costa dos Santos, Revson (1482) | Won 2-1 | +181500 |
| 3standard | 512 | Figueiro Soares, Diogo (1500) | Won 2-1 | +181518 |
| 4standard | 242 | Silva da Lima, Ramon (1520) | Won 2-0 | +181536 |
| 5standard | 145 | Doelinger, Wesley (1538) | Lost 0-2 | -181518 |
| 6standard | 335 | Alejandro Tomas, Scass (1486) | Lost 0-2 | -191499 |
| 7standard | 331 | Ribeiro Tavolaro, Rafael (1503) | Won 2-1 | +191518 |
| 8standard | 220 | Leandro Morais da Roch, (1517) | Won 2-0 | +181536 |
| 9standard | 161 | Ribeiro, Otavio (1499) | Won 2-0 | +171553 |
| average opponent: 1505record: 6-3 | new rating: 1553 | |||