Perre, Joao O
Current rating: 1535
Record: 7-5-1
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Oliveira, Paulo (1589) | Won 2-0 | +191556 |
| 2sealed | 7 | Amandio, Andre (1518) | Draw 1-1 | -11555 |
| 3sealed | 109 | Bastos, Miguel (1555) | Lost 1-2 | -181537 |
| 4sealed | 217 | Pappus, Julien (1500) | Won 2-0 | +171554 |
| 5sealed | 152 | Moreira, Jose Antonio (1468) | Lost 0-2 | -191535 |
| average opponent: 1526record: 2-2-1 | new rating: 1535 | |||
| Grand Prix Madrid 2008 (EVE limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 84 | Garcia Cortes, Emilio (1500) | Won 2-1 | +181518 |
| 2sealed | 86 | Punter, Albert (1465) | Lost 0-2 | -191499 |
| 3sealed | 142 | Escamilla Manas, Antonio (1499) | Won 1-0 | +181517 |
| 4sealed | 107 | Bernabeu-Edo, Jesus (1478) | Lost 1-2 | -191498 |
| 5sealed | 205 | Krejsa, Tomas (1640) | Lost 1-2 | -151483 |
| 6sealed | 211 | Ortiz, Gregory (1482) | Won 2-1 | +181501 |
| 7sealed | 166 | Delfin, Ivan (1498) | Won 2-1 | +181519 |
| 8sealed | 102 | Pacini, Emanuele (1523) | Won 2-1 | +181537 |
| average opponent: 1511record: 5-3 | new rating: 1537 | |||