Pereira, Weder
Current rating: 1864 (#986)
Record: 40-17-1
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1857 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 222 | De Chagas Marques, Leo Macklene (1682) | Won 2-0 | +151872 |
| 3modern | 124 | Grassato, Vitor (1818) | Won 2-1 | +171889 |
| 4modern | 69 | Caffaro, Bruno (1499) | Lost 0-2 | -251864 |
| top | average opponent: 1666record: 2-1 | new rating: 1864 | ||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1784 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 16 | Menezes, Hermano (1468) | Won 2-0 | +131797 |
| 4modern | 87 | De La Fuente, Francisco (1579) | Won 2-0 | +141811 |
| 5modern | 9 | Silva Campos, Hueliton (1602) | Won 2-0 | +141825 |
| 6modern | 3 | Lima Soares, Pedro Igor (1574) | Won 2-0 | +141839 |
| 7modern | 13 | Epstein, Nicolas (1748) | Won 2-1 | +161855 |
| 8modern | 6 | Back, Vinicius (1612) | Lost 1-2 | -221833 |
| 9modern | 16 | Cavassin Jayme, Cassius (1646) | Won 2-1 | +141847 |
| 10modern | 9 | Paredes, Marcos (1695) | Lost 0-2 | -201827 |
| 11modern | 18 | Alves Pellegrini, Felipe (1813) | Won 2-1 | +171844 |
| 12modern | 12 | Ancelmo, Fabio (1798) | Draw 1-1 | 01844 |
| 13modern | 18 | de Castro, Leonardo (1748) | Won 2-1 | +161860 |
| 14modern | 11 | Sasso, Mauro (1871) | Lost 1-2 | -181842 |
| 15modern | 21 | Amorim Nunes, Icaro Moan (1664) | Won 2-0 | +151857 |
| top | average opponent: 1678record: 9-3-1 | new rating: 1857 | ||
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1678 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 204 | Fernando Silva, Victor (2020) | Lost 1-2 | -121666 |
| 4modern | 332 | Epstein, Nicolas (1629) | Won 2-1 | +171683 |
| 5modern | 170 | Oliveira Coelho, Alison (1527) | Lost 0-2 | -211662 |
| 6modern | 237 | Franzin Bassette, Fabio Luiz (1517) | Lost 1-2 | -201642 |
| 7modern | 335 | Santaren, Waldevino (1492) | Won 2-1 | +151657 |
| 8modern | 247 | Hernandez Seguro, David (1545) | Won 2-0 | +161673 |
| 9modern | 194 | Back, Vinicius (1536) | Won 2-1 | +161689 |
| 10modern | 108 | Campos Conti, Rafael (1638) | Won 2-1 | +171706 |
| 11modern | 89 | Henrique Paniago De O Amaral, Pedro (1571) | Won 2-1 | +151721 |
| 12modern | 32 | Do Prado Fernandes, Hugo (1546) | Won 2-0 | +151736 |
| 13modern | 33 | Mafort, Victor (1612) | Won 2-1 | +161752 |
| 14modern | 15 | Silva, Bruno (1645) | Won 2-1 | +161768 |
| 15modern | 16 | Giantin Scacchetti, Gabriel (1693) | Won 2-1 | +161784 |
| top | average opponent: 1613record: 10-3 | new rating: 1784 | ||
| Grand Prix Rio de Janeiro 2013 (GTC standard) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 13 | Pedro, James (1486) | Won 2-0 | +171548 |
| 3standard | 49 | Cardoso Oliveira, Marcos Adriano (1536) | Won 2-1 | +181566 |
| 4standard | 54 | Fernando Silva, Victor (1587) | Lost 0-2 | -181548 |
| 5standard | 59 | Almeida, Leo (1463) | Won 2-0 | +171565 |
| 6standard | 46 | Crusius, Matheus (1555) | Won 2-1 | +181583 |
| 7standard | 42 | Sergio Cardoso, Paulo (1571) | Won 2-1 | +171600 |
| 8standard | 110 | Todesco, Eddie F (1592) | Lost 0-2 | -181582 |
| 9standard | 34 | Goncalves Dos Santos, Rodrigo (1710) | Won 2-0 | +201602 |
| 10standard | 12 | Cesar, Hudson (1576) | Won 2-0 | +181620 |
| 11standard | 3 | Eduardo B., (1561) | Won 2-0 | +171637 |
| 12standard | 26 | Villela, Artur (1682) | Lost 1-2 | -171620 |
| 13standard | 19 | Zurita Gonzalez, David (1651) | Won 2-1 | +181638 |
| 14standard | 9 | Quintana, Guido (1749) | Won 2-1 | +201658 |
| 15standard | 9 | Moschini, Esteban (1746) | Won 2-0 | +201678 |
| top | average opponent: 1605record: 11-3 | new rating: 1678 | ||
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 218 | dos santos Junior, Abias (1500) | Won 2-0 | +181530 |
| 2sealed | 64 | Almeida, Rafael (1519) | Won 2-0 | +181548 |
| 3sealed | 13 | Nunes Barrada, Evandro (1607) | Lost 0-2 | -171531 |
| top | average opponent: 1542record: 2-1 | new rating: 1531 | ||
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 40 | Archangelo, Felipe (1518) | Won 2-0 | +181518 |
| 4standard | 24 | Gouvea de Oliveira, Adilson (1636) | Won 2-1 | +201538 |
| 5standard | 34 | Roca Suarez, Diego (1561) | Won 2-0 | +191557 |
| 6standard | 17 | Nakazora Abe, Allison (1503) | Lost 0-0 | -191538 |
| 7standard | 18 | Batista Ferreira, Marlos (1572) | Lost 0-2 | -171521 |
| 8standard | 51 | Gabriel M Lobo, (1536) | Won 2-1 | +181539 |
| 9standard | 52 | Oliveira, Alan (1557) | Won 2-1 | +181557 |
| 10standard | 34 | Saporito, Dante (1541) | Lost 0-2 | -181539 |
| 11standard | 29 | Vidugiris, Gaudenis (1902) | Won 2-1 | +241563 |
| 12standard | 20 | Pattaro, Eloi Ugo (1700) | Lost 1-2 | -151548 |
| 13standard | 27 | Costa, Natanael (1587) | Lost 0-2 | -181530 |
| 14standard | 36 | Dannemann, Joao Manoel (1524) | Lost 0-2 | -181512 |
| top | average opponent: 1595record: 6-6 | new rating: 1512 | ||