Pereira, Joao
Current rating: 1476
Record: 18-20-3
| Grand Prix Madrid 2015 (ORI limited) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Chamorro Villoria, Jua (1500) | Won 2-1 | +181486 |
| 2sealed | 275 | Gonzalez Lozano, Antonio Fernando (1551) | Won 2-0 | +201506 |
| 3sealed | 180 | Gabaldon Navarro, Carlos (1617) | Lost 0-2 | -161490 |
| 4sealed | 420 | Benito Duro, Juan (1516) | Won 2-0 | +181508 |
| 5sealed | 269 | Bernabeu-Edo, Jesus (1650) | Lost 0-2 | -151493 |
| 6sealed | 331 | Kirsten, Kevin (1519) | Won 2-0 | +181511 |
| 7sealed | 151 | Hernando, Adrian (1538) | Lost 1-2 | -171494 |
| 8sealed | 254 | Fadin, Enrico (1519) | Lost 1-2 | -181476 |
| top | average opponent: 1551record: 4-4 | new rating: 1476 | ||
| Grand Prix Seville 2015 (FRF standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 133 | Gonzalez Castaneda, Jose A (1448) | Won 2-0 | +171504 |
| 2standard | 136 | Perez Aranda-Seda, Daniel (1468) | Lost 0-2 | -191485 |
| 3standard | 287 | Mateu Vidal, Victor (1499) | Won 2-0 | +191504 |
| 4standard | 160 | Cano Rodriguez, Miguel Angel (1470) | Lost 1-2 | -191485 |
| 5standard | 250 | Rodriguez Frye, Karel (1505) | Lost 1-2 | -181467 |
| 6standard | 311 | Vilar Perez, Esteban (1482) | Won 2-0 | +191486 |
| 7standard | 216 | Romero Reina, Juan Antonio (1499) | Lost 1-2 | -181468 |
| top | average opponent: 1481record: 3-4 | new rating: 1468 | ||
| Grand Prix Valencia 2013 (THS limited) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Sacristan Gonzalez, Antonio (1500) | Won 2-1 | +181529 |
| 2sealed | 124 | Guillen Torres, Jaime (1518) | Won 2-1 | +181547 |
| 3sealed | 62 | Rosa Serrat, Bernat (1522) | Lost 1-2 | -181529 |
| 4sealed | 58 | Andujar, Juan Pedro (1491) | Won 2-1 | +171546 |
| 5sealed | 99 | Torea Figueiras, Carlo (1472) | Lost 1-2 | -201526 |
| 6sealed | 265 | Domenech, Xavier (1324) | Lost 1-2 | -211505 |
| 7sealed | 273 | Piera, Enrique (1496) | Lost 1-2 | -181487 |
| top | average opponent: 1475record: 3-4 | new rating: 1487 | ||
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 564 | Pose, Marcelo (1562) | Won 2-0 | +191526 |
| 2sealed | 627 | Gusakov, Stanislav (1518) | Lost 0-2 | -181508 |
| 3sealed | 704 | Andersen, Kim (1502) | Won 2-0 | +181526 |
| 4sealed | 629 | Pereira, Mario (1515) | Draw 1-1 | 01526 |
| 5sealed | 657 | Artamonova, Maria (1710) | Won 2-1 | +211547 |
| 6sealed | 607 | Girao, Filipe (1552) | Lost 0-2 | -181529 |
| 7sealed | 657 | Baldwin, Miguel (1535) | Lost 0-2 | -181511 |
| top | average opponent: 1556record: 3-3-1 | new rating: 1511 | ||
| Grand Prix Porto 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 198 | Henriques, Andre (1500) | Won 2-0 | +181518 |
| 2sealed | 114 | Costa, Joaquim (1518) | Won 1-0 | +181536 |
| 3sealed | 65 | Llopis Martinez, Paco Francisco (1583) | Draw 1-1 | +11537 |
| 4sealed | 61 | Correia, Antonio (1536) | Lost 0-0 | -181519 |
| 5sealed | 124 | Martin, Daniel (1502) | Won 2-0 | +181537 |
| 6sealed | 65 | Pacifici, Guido (1533) | Won 2-1 | +171554 |
| 7sealed | 44 | Hothow, Dominik (1886) | Won 2-1 | +241578 |
| 8rochester | 17 | Rodrigues, Marcio (1561) | Lost 1-2 | -181560 |
| 9rochester | 28 | Oliveira, Paulo1 (1554) | Draw 1-1 | 01560 |
| 10rochester | 20 | Betti, Alessandro (1619) | Lost 0-2 | -171543 |
| 11rochester | 30 | Schulte-Middelich, Micha (1614) | Lost 0-2 | -171526 |
| 12rochester | 30 | Marcos, Pedro (1476) | Lost 0-2 | -191507 |
| top | average opponent: 1573record: 5-5-2 | new rating: 1507 | ||