Malveiro, Joao
Current rating: 1544
Record: 18-15-5
| Grand Prix Lisbon 2005 (BOK limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 215 | Jacinto, Diogo (1500) | Won 2-1 | +171539 |
| 2sealed | 68 | Melo, Hugo (1518) | Won 2-1 | +181557 |
| 3sealed | 42 | Ferreira, Davide (1536) | Won 2-1 | +171574 |
| 4sealed | 41 | Ishii, Kuniyoshi (1685) | Lost 0-1 | -161558 |
| 5sealed | 52 | Gomes, Nuno M (1485) | Won 2-1 | +171575 |
| 6sealed | 43 | Maia, Dinis (1594) | Won 2-1 | +181593 |
| 7sealed | 25 | Peleira, Mauro (1524) | Draw 1-1 | -11592 |
| 8sealed | 16 | da Costa Cabral, Bernardo (1914) | Lost 1-2 | -121580 |
| 9sealed | 47 | Amundsen, Rune (1543) | Won 2-0 | +171597 |
| 10draft | 60 | Ferrer, Andreu (1544) | Lost 0-2 | -191578 |
| 12draft | 48 | Diez, Mikel (1645) | Lost 0-2 | -171561 |
| 13draft | 53 | Manteigueiro, Antonio (1612) | Lost 1-2 | -171544 |
| top | average opponent: 1592record: 6-5-1 | new rating: 1544 | ||
| Grand Prix Valencia 2001 (PLS limited) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Perez Paez, Oscar (1500) | Lost 0-2 | -191545 |
| 2sealed | 132 | Diez, Mikel (1481) | Lost 1-2 | -191526 |
| 3sealed | 184 | Renovell, Sergio Berzosa (1464) | Won 2-1 | +171543 |
| 4sealed | 143 | Lopez, Jesus (1481) | Won 2-1 | +171560 |
| 5sealed | 100 | Munoz, Adan (1499) | Lost 1-2 | -191541 |
| 6sealed | 127 | Francisco, German (1484) | Lost 1-2 | -191522 |
| top | average opponent: 1485record: 2-4 | new rating: 1522 | ||
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 94 | Lachmann, Daniel (1518) | Lost 0-2 | -181513 |
| 3sealed | 202 | Pinto, Vasco (1499) | Won 2-0 | +181531 |
| 4sealed | 94 | Ferreira, Guilherme (1518) | Won 0-0 | +171548 |
| 5sealed | 45 | Proenca, Miguel (1536) | Won 2-0 | +181566 |
| 6sealed | 50 | Maca, Luis (1554) | Won 2-1 | +181584 |
| 7sealed | 12 | Rodrigues, Marcio (1561) | ID | 01584 |
| 8rochester | 26 | Buchanan, Andrew (1589) | Draw 1-1 | 01584 |
| 9rochester | 24 | Fedriga, Stefano (1556) | Lost 1-2 | -181566 |
| 10rochester | 28 | Oliveira, Paulo1 (1554) | Won 2-0 | +171583 |
| 11rochester | 20 | Castro, Simao (1556) | Draw 1-1 | 01583 |
| 12rochester | 19 | Perez, Javier (1555) | Lost 0-2 | -191564 |
| top | average opponent: 1545record: 5-3-3 | new rating: 1564 | ||
| Grand Prix Barcelona 1999 (USG sealed) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 34 | Rios, Jose (1500) | Draw 0-0 | 01500 |
| 3sealed | 65 | Fayard, Pierre (1500) | Won 0-0 | +181518 |
| 4sealed | 45 | Verbeken, Dirk (1518) | Draw 0-0 | 01518 |
| 5sealed | 76 | Cardoso, Gustavo (1499) | Won 0-0 | +181536 |
| 6sealed | 46 | Camacho, Oriol (1536) | Won 0-0 | +181554 |
| 7sealed | 25 | Puig, Toni (1536) | Lost 0-0 | -191535 |
| 8sealed | 29 | Kearney, David (1485) | Lost 0-0 | -191516 |
| 9sealed | 31 | Possemiers, Ben (1408) | Won 0-0 | +161532 |
| 10sealed | 26 | Marco, Pedro (1536) | Won 0-0 | +191551 |
| 11sealed | 20 | Grandon, Dan (1473) | Lost 0-0 | -201531 |
| top | average opponent: 1499record: 5-3-2 | new rating: 1531 | ||