Pereira, Ruben
Current rating: 1515
Record: 8-7
| Grand Prix Madrid 2012 (DKA limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 626 | Luczek, Piotr (1518) | Lost 0-2 | -191517 |
| 2sealed | 799 | Fernandes, Rafael (1482) | Won 2-0 | +181535 |
| 3sealed | 791 | Delgado, Sergio (1501) | Won 2-1 | +171552 |
| 4sealed | 729 | Lindner, Marcus (1558) | Lost 1-2 | -181534 |
| 5sealed | 831 | Echague, Eduardo (1660) | Won 2-1 | +211555 |
| 6sealed | 714 | Cauchales, Francisco (1518) | Lost 0-2 | -191536 |
| 7sealed | 799 | Lopez, Alfredo (1403) | Lost 0-2 | -211515 |
| average opponent: 1520record: 3-4 | new rating: 1515 | |||
| Grand Prix Lisbon 2002 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 153 | Tiago, Rato (1500) | Won 2-0 | +181518 |
| 2extended | 63 | Munoz, Miguel (1518) | Won 2-0 | +181536 |
| 3extended | 45 | Santos, Claudio (1606) | Lost 0-2 | -171519 |
| 4extended | 165 | Santos, Andre 2 (1466) | Lost 0-2 | -191500 |
| 5extended | 226 | Cruz, Nuno (1501) | Won 2-0 | +181518 |
| 6extended | 133 | Monteiro, Joao (1519) | Won 2-0 | +181536 |
| 7extended | 102 | Sequeira, Rui (1504) | Lost 1-2 | -181518 |
| 8extended | 139 | Martins, Joao 5844 (1518) | Won 2-0 | +181536 |
| average opponent: 1516record: 5-3 | new rating: 1536 | |||