Oliveira, Jefferson S
Current rating: 1553
Record: 10-7-1
| Grand Prix Santiago 2011 (ISD limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Castro, Carlos (1500) | Won 2-1 | +181535 |
| 2sealed | 11 | Zumaeta, Diego (1518) | Draw 1-1 | 01535 |
| 3sealed | 105 | Nunez, Sebastian (1448) | Lost 0-2 | -201515 |
| 4sealed | 226 | Kutran, German A (1500) | Won 2-0 | +181533 |
| 5sealed | 157 | Pedemonte, Vincenzo C (1518) | Lost 0-2 | -181515 |
| 6sealed | 205 | Cardenas, Jose Moises (1519) | Lost 0-2 | -181497 |
| 7sealed | 219 | Concha, Ivan (1482) | Won 2-1 | +171514 |
| 8sealed | 164 | Coqueiro, Rafael S (1681) | Won 2-1 | +211535 |
| 9sealed | 114 | Perna, Agustin (1523) | Won 2-0 | +181553 |
| average opponent: 1521record: 5-3-1 | new rating: 1553 | |||
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 45 | Francisco Divita, (1500) | Lost 0-2 | -181482 |
| 2standard | 161 | Briozzo, Juan Diego (1480) | Won 2-1 | +181500 |
| 3standard | 181 | Podolski Jacinto, Bruno (1501) | Lost 0-2 | -181482 |
| 4standard | 260 | Diego Vieitez, (1481) | Won 2-0 | +181500 |
| 5standard | 223 | Bruno K Brecailo, (1483) | Lost 0-2 | -181482 |
| 6standard | 207 | Lourenco, Edgard (1466) | Won 0-0 | +171499 |
| 7standard | 159 | Daniel M Santos, (1500) | Won 2-0 | +181517 |
| 8standard | 125 | Yuri Santana, (1516) | Lost 0-2 | -181499 |
| 9standard | 107 | evandro colares, (1498) | Won 2-0 | +181517 |
| average opponent: 1492record: 5-4 | new rating: 1517 | |||