Castanheira, Joao
Current rating: 1505
| Grand Prix Barcelona 2006 (GPT limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 45 | Garrido, Javier (1500) | Won 0-0 | +181505 |
| 2sealed | 88 | Muntada, Javier (1519) | Won 2-1 | +181523 |
| 3sealed | 54 | Guerra, Ricardo [ESP] (1669) | Won 2-1 | +211544 |
| 4sealed | 10 | Trobia, Federico (1496) | Lost 0-2 | -191525 |
| 5sealed | 73 | Barajas, Alfonso (1403) | Lost 0-2 | -201505 |
| top | average opponent: 1518record: 3-2 | new rating: 1505 | ||
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Crauo, Ricardo (1500) | Won 2-1 | +181498 |
| 2sealed | 52 | Ribeiro, Daniel [PRT] (1518) | Draw 1-1 | +11499 |
| 3sealed | 89 | Alveirinho, Joao (1519) | Won 2-1 | +181517 |
| 4sealed | 53 | Bernardo, Armando (1537) | Won 2-0 | +181535 |
| 5sealed | 26 | Perez del Pozo, Angel (1722) | Lost 0-2 | -141521 |
| 6sealed | 66 | Rodriguez, Alberto (1608) | Lost 1-2 | -171504 |
| 7sealed | 103 | Tan, Ronnie (1526) | Lost 0-2 | -171487 |
| top | average opponent: 1561record: 3-3-1 | new rating: 1487 | ||
| Grand Prix Madrid 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 72 | Frade, Pedro (1462) | Lost 1-2 | -191481 |
| 2sealed | 469 | Ginesta, Daniel (1464) | Won 2-0 | +181499 |
| 3sealed | 386 | Porquet, Eduard (1500) | Lost 0-2 | -181481 |
| 4sealed | 494 | Johnson, Bhajon (1482) | Draw 1-1 | 01481 |
| 5sealed | 431 | Prior, Joao (1483) | Won 2-1 | +181499 |
| 6sealed | 324 | Pires, Pedro (1437) | Lost 1-2 | -191480 |
| top | average opponent: 1471record: 2-3-1 | new rating: 1480 | ||