Ferreira, Joao
Current rating: 1595
Record: 28-27-2
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 141 | Galante, Henrique (1483) | Won 2-0 | +171550 |
| 2sealed | 140 | Silva, Joao Paulo (1554) | Won 2-1 | +181568 |
| 3sealed | 99 | Boj Perez, Israel (1753) | Lost 1-2 | -151553 |
| 4sealed | 122 | Sandford, Kurt (1540) | Won 2-0 | +181571 |
| 5sealed | 139 | Angeles, Carlos Martin (1540) | Won 2-1 | +171588 |
| 6sealed | 85 | Schafer, Benedikt (1354) | Lost 0-2 | -221566 |
| 7sealed | 143 | Riffert, Till (1789) | Won 2-1 | +221588 |
| 8sealed | 82 | Davios, Dimitris (1639) | Won 2-1 | +191607 |
| 9sealed | 35 | Carvalho, Marcio (1935) | Lost 1-2 | -121595 |
| top | average opponent: 1621record: 6-3 | new rating: 1595 | ||
| Grand Prix Paris 2011 (MBS limited) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 53 | Artamonova, Maria (1518) | Won 2-0 | +191478 |
| 3sealed | 80 | Aplin, Steven (1619) | Lost 1-2 | -161462 |
| 4sealed | 172 | Anes, Emmanuel (1524) | Won 2-0 | +201482 |
| 5sealed | 143 | Nordeng, Gard Nyborg (1519) | Lost 0-2 | -181464 |
| 6sealed | 197 | Milcent, Matthieu (1523) | Won 2-0 | +191483 |
| 7sealed | 131 | Havard, Boris (1546) | Won 2-1 | +191502 |
| 8sealed | 74 | Perin, Lionel (1685) | Won 2-1 | +221524 |
| 9sealed | 64 | dos Santos Vieira, Eduardo (1646) | Won 2-1 | +201544 |
| 10sealed | 34 | Floch, Ivan (1922) | Lost 0-2 | -111533 |
| top | average opponent: 1612record: 6-3 | new rating: 1533 | ||
| Grand Prix Florence 2010 (SOM limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 652 | Beduzzi, David (1642) | Lost 1-2 | -161476 |
| 2sealed | 696 | Grosso, Andrea (1600) | Lost 0-2 | -151461 |
| 3sealed | 758 | Ballero, Matteo (1464) | Won 2-0 | +181479 |
| 4sealed | 724 | Markos, Daniel (1401) | Lost 1-2 | -201459 |
| 5sealed | 747 | Maddaluno, Mario (1465) | Lost 1-2 | -181441 |
| 6sealed | 721 | Giannelli, Alessandro (1412) | Won 2-1 | +181459 |
| top | average opponent: 1497record: 2-4 | new rating: 1459 | ||
| Grand Prix Paris 2009 (ZEN limited) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 770 | Touzani, Mehdi (1518) | Won 2-1 | +191478 |
| 3sealed | 673 | Camilo, Pedro F (1537) | Lost 1-2 | -171461 |
| 4sealed | 764 | Obererlacher, David (1462) | Won 2-0 | +181479 |
| 5sealed | 760 | Hebky, Michal (1877) | Lost 1-2 | -111468 |
| 6sealed | 781 | Le Coz, Mael (1581) | Won 2-0 | +201488 |
| 7sealed | 783 | Kuebler, Dennis (1481) | Won 2-1 | +181506 |
| 8sealed | 719 | Van Goethem, Stijn (1725) | Lost 0-2 | -141492 |
| top | average opponent: 1597record: 4-3 | new rating: 1492 | ||
| Grand Prix Barcelona 2009 (ARB standard) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 163 | Tejada, Alai (1500) | Lost 1-2 | -171456 |
| 2standard | 226 | Roca Piella, Andreu (1483) | Won 2-1 | +181474 |
| 3standard | 211 | Peruga, Sara (1501) | Won 2-0 | +191493 |
| 4standard | 142 | Olszak, Michael (1567) | Lost 0-2 | -171476 |
| 5standard | 248 | Dela Torre, Carlos (1499) | Lost 0-2 | -171459 |
| top | average opponent: 1510record: 2-3 | new rating: 1459 | ||
| Grand Prix Paris 2008 (ALA limited) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 691 | Mongilardi, Gilles (1525) | Won 2-1 | +191455 |
| 3sealed | 552 | Billion, Jean (1540) | Won 2-1 | +201475 |
| 4sealed | 591 | Yokomizo, Adriano Koji (1606) | Won 2-0 | +201495 |
| 5sealed | 518 | Saito, Tomoharu (1955) | Draw 1-1 | +81503 |
| 6sealed | 531 | Wolf, Christopher (1675) | Lost 1-2 | -151488 |
| 7sealed | 570 | Lavoine, Emeline (1393) | Won 2-0 | +161504 |
| 8sealed | 545 | Yatsenko, Alex (1674) | Lost 0-2 | -151489 |
| 9sealed | 569 | Zeil, Jean-Julien (1603) | Lost 1-2 | -161473 |
| top | average opponent: 1621record: 4-3-1 | new rating: 1473 | ||
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 8 | Tejero Hernandez, Joaqin (1518) | Draw 1-1 | +21448 |
| 3sealed | 81 | Fanico, Pedro (1521) | Won 2-1 | +191467 |
| 4sealed | 55 | Ramos, Miguel (1522) | Won 2-0 | +191486 |
| 5sealed | 28 | Lehnert, Heiko (1592) | Lost 0-2 | -161470 |
| 6sealed | 61 | Mora Munoz, Jose (1534) | Lost 0-2 | -171453 |
| 7sealed | 104 | Pacheco, Calixto (1479) | Lost 0-2 | -171436 |
| top | average opponent: 1527record: 2-3-1 | new rating: 1436 | ||
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 102 | Bailadeira, Filipe (1463) | Lost 0-2 | -191481 |
| 2sealed | 220 | Laur, Pierre-Alain (1540) | Lost 0-2 | -171464 |
| 3sealed | 286 | Seixas, Nuno (1466) | Lost 1-2 | -181446 |
| 4sealed | 291 | Rua, Bruno (1446) | Lost 0-0 | -181428 |
| 5sealed | 251 | Jesus, Ricardo (1428) | Won 2-1 | +181446 |
| 6sealed | 204 | Oliveira, Joao 1 (1446) | Won 2-0 | +181464 |
| 7sealed | 171 | Goncalves, Nuno1 (1464) | Lost 1-2 | -181446 |
| top | average opponent: 1465record: 2-5 | new rating: 1446 | ||