Roberto dos Santos Mar,
Current rating: 1481
Record: 4-5
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 370 | Martinez Pereira Dias, Bruno (1493) | Lost 1-2 | -181482 |
| 2standard | 354 | Paganelli, Alan (1482) | Won 2-1 | +181500 |
| 3standard | 321 | de Carvalho, Marlon Igor (1500) | Won 2-1 | +181518 |
| 4standard | 363 | Job Junior, Joao (1518) | Won 2-1 | +181536 |
| 5standard | 182 | Boni, Andre (1534) | Lost 1-2 | -181518 |
| 6standard | 308 | Goncalves, Italo (1486) | Lost 0-2 | -191499 |
| 7standard | 288 | Micrute, Rafael (1501) | Lost 1-2 | -181481 |
| 8standard | 303 | Pardini, Felipe (1478) | Won 2-0 | +181499 |
| 9standard | 224 | Torres, Gustavo (1500) | Lost 0-2 | -181481 |
| average opponent: 1499record: 4-5 | new rating: 1481 | |||