Silva Freitas, Jeferson
Current rating: 1493
Record: 8-8
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 29 | Queiroz de Figueiredo, Jadiel (1500) | Lost 0-2 | -181496 |
| 2standard | 462 | Rios Kaniski, Thiago (1481) | Won 2-0 | +181514 |
| 3standard | 402 | Figueiredo, Tiago (1500) | Won 2-1 | +181532 |
| 4standard | 267 | Aurelio Costa Barbosa, (1518) | Lost 0-2 | -191513 |
| 5standard | 324 | Felix Borin, Wilson (1500) | Lost 0-2 | -181495 |
| 6standard | 434 | Kendi, Augusto (1482) | Lost 0-2 | -181477 |
| 7standard | 387 | Costa, Leonardo (1466) | Won 2-0 | +181495 |
| 8standard | 304 | Gaspar dos Santos, Thiago (1464) | Won 2-0 | +171512 |
| 9standard | 213 | Roberto Moratta de Mel, (1466) | Lost 0-2 | -191493 |
| average opponent: 1486record: 4-5 | new rating: 1493 | |||
| Grand Prix Rio de Janeiro 2013 (GTC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 218 | Feliciano dos Santos, Guilherme (1443) | Won 2-1 | +171517 |
| 2standard | 110 | Nicolas R., (1500) | Won 2-0 | +181535 |
| 3standard | 16 | Maximo, Mario Motta de Almei (1519) | Lost 1-2 | -191516 |
| 4standard | 178 | Benites, Danilo (1485) | Won 2-1 | +181534 |
| 5standard | 58 | Silva, Fernando (1485) | Won 2-0 | +171551 |
| 6standard | 50 | Dominguez, Martin Sebastian (1448) | Lost 0-2 | -201531 |
| 7standard | 64 | Silva, Igor Magno (1603) | Lost 0-2 | -171514 |
| average opponent: 1497record: 4-3 | new rating: 1514 | |||