Barcellos, Guilherme
Current rating: 1789 (#2510)
Record: 71-40-3
Grand Prix Porto Alegre 2004Grand Prix Buenos Aires 2008Grand Prix Sao Paulo 2009Grand Prix London 2011Grand Prix Prague 2011Grand Prix Santiago 2011Grand Prix Sao Paulo 2012Grand Prix Buenos Aires 2014Grand Prix Sao Paulo 2015Grand Prix Porto Alegre 2015Grand Prix Sao Paulo 2017Grand Prix Sao Paulo 2018Grand Prix Sao Paulo 2019
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1801 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 175 | Minetti, Maximiliano (1500) | Won 2-0 | +131814 |
| 2modern | 264 | Labrin, David (1290) | Won 2-0 | +91823 |
| 3modern | 78 | Teixeira Silva, Jean Pablo (1537) | Lost 0-2 | -231800 |
| 4modern | 377 | Cabral Ribeiro, Arthur (1521) | Won 2-0 | +131813 |
| 5modern | 163 | Royer Bion, Thales (1520) | Lost 0-2 | -231790 |
| 6modern | 318 | Rossello Lima, Luis Felippe (1598) | Won 2-0 | +141804 |
| 7modern | 119 | Gonzalez, Fernando David (1954) | Lost 0-2 | -151789 |
| top | average opponent: 1560record: 4-3 | new rating: 1789 | ||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1729 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 492 | Martin Salaroli, Phelipe (1500) | Lost 1-2 | -221707 |
| 2modern | 515 | Almono, Lucas (1483) | Won 2-0 | +141721 |
| 3modern | 390 | Akina Kagueyama, Ellen (1500) | Won 2-0 | +141735 |
| 4modern | 357 | Mandaji, Marcelo (1460) | Lost 1-2 | -231712 |
| 5modern | 326 | Pires, Daniel (1533) | Won 2-0 | +151727 |
| 6modern | 185 | Maranhao Junior, Magno (1483) | Won 2-1 | +131740 |
| 7modern | 203 | Marcatti, Andre (1485) | Won 2-1 | +141754 |
| 8modern | 178 | Cardoso, Thiago (1548) | Won 2-0 | +141768 |
| 9modern | 49 | Melecardi, Joao (1573) | Lost 1-2 | -211747 |
| 10modern | 109 | Lessa, Ismael (1565) | Won 2-1 | +141761 |
| 11modern | 75 | Saldanha Dos Santos, Helio (1554) | Won 2-0 | +151776 |
| 12modern | 42 | Pereira Da Silva, Rafael (1591) | Lost 1-2 | -221754 |
| 13modern | 66 | Toledo, Marlus (1668) | Won 2-1 | +171771 |
| 14modern | 56 | Maldonado, Joaquin (1618) | Won 2-0 | +151786 |
| 15modern | 48 | Kondo, Igor Kendi (1615) | Won 2-0 | +151801 |
| top | average opponent: 1545record: 11-4 | new rating: 1801 | ||
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1716 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 420 | Nascimento Ruban Dos Santos, Rafael (1500) | Won 2-1 | +141730 |
| 2modern | 270 | Freitas Barbosa, Andre (1485) | Lost 1-2 | -221708 |
| 3modern | 291 | Malvezzi, Pedro Henrique (1481) | Won 2-0 | +141722 |
| 4modern | 217 | Tostes Lemos, Rodolfo (1504) | Won 2-1 | +141736 |
| 5modern | 81 | Tavares Dos Reis Ramos, Diogenes (1527) | Won 2-0 | +141750 |
| 6modern | 121 | Motta, Joao (1602) | Lost 0-2 | -211729 |
| 7modern | 173 | Quege, Joao (1719) | Won 2-0 | +181747 |
| 8modern | 133 | Oliveira Graichen, Leonardo (1650) | Won 2-1 | +161763 |
| 9modern | 55 | Silva Campos, Hueliton (1567) | Won 2-1 | +151778 |
| 10modern | 59 | Marquez De Oliveira Filho, Murilo (1592) | Lost 1-2 | -211757 |
| 11modern | 59 | Lira Moreira, Andre (1577) | Won 2-1 | +141771 |
| 12modern | 48 | Caminha, Joao (1594) | Lost 1-2 | -211750 |
| 13modern | 86 | Leite, Bruno (1572) | Lost 0-2 | -211729 |
| top | average opponent: 1567record: 8-5 | new rating: 1729 | ||
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1690 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 244 | Silva Bobsin, Wyllyam (1500) | Won 2-1 | +141704 |
| 2modern | 21 | Resmini, Filipe (1518) | Won 2-1 | +151719 |
| 3modern | 31 | Grubba Olsen, Lauro Emilio (1480) | Lost 0-2 | -221697 |
| 4modern | 125 | Massoni, Luciano (1518) | Won 2-0 | +141711 |
| 5modern | 104 | Souza, Gabriel6183 (1519) | Won 2-1 | +151726 |
| 6modern | 34 | Fernando Silva, Victor (1647) | Lost 0-2 | -201706 |
| 7modern | 93 | K, Guinther (1542) | Won 2-0 | +151721 |
| 8modern | 54 | Peralta, Rafael (1594) | Won 2-0 | +161737 |
| 9modern | 47 | Marquez, Diego (1566) | Lost 0-2 | -211716 |
| top | average opponent: 1542record: 6-3 | new rating: 1716 | ||
| Grand Prix Sao Paulo 2015 (DTK standard) | starting rating: 1674 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 492 | Cahali Martin, Felipe (1500) | Won 2-0 | +151689 |
| 2standard | 48 | Kiyoshi Nakabayashi Cr, (1518) | Won 2-1 | +151704 |
| 3standard | 126 | Medina Alves, Alan (1447) | Draw 1-1 | -51699 |
| 4standard | 122 | da Silva Pantoja, Elias (1603) | Lost 0-2 | -201679 |
| 5standard | 251 | Jose Viotto Maianente, (1517) | Won 2-1 | +151694 |
| 6standard | 159 | Martins, Joao (1761) | Won 2-1 | +201714 |
| 7standard | 87 | Feitosa, Isael (1545) | Draw 1-1 | -41710 |
| 8standard | 167 | Rosa, Carlos Leandro (1554) | Lost 1-2 | -201690 |
| top | average opponent: 1556record: 4-2-2 | new rating: 1690 | ||
| Grand Prix Buenos Aires 2014 (BNG standard) | starting rating: 1641 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 147 | Escobar, Ivan (1500) | Won 2-0 | +161657 |
| 2standard | 191 | Perez, Fernando (1564) | Won 2-1 | +161673 |
| 3standard | 34 | Fontana, Fernando (1536) | Lost 1-2 | -201653 |
| 4standard | 164 | Jones, Gaspar (1417) | Won 2-1 | +131666 |
| 5standard | 82 | Lombardelli, Bruno (1699) | Lost 1-2 | -171649 |
| 6standard | 188 | Cancino, Christian (1448) | Won 2-0 | +141663 |
| 7standard | 173 | Muscio, Silvio Gabriel (1453) | Won 2-0 | +151678 |
| 8standard | 96 | Barzola, Juan Pablo (1540) | Won 2-1 | +151693 |
| 9standard | 10 | Vassallo, Javier (1619) | Lost 1-2 | -191674 |
| top | average opponent: 1531record: 6-3 | new rating: 1674 | ||
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1690 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 215 | Pausa, Jesus (1500) | Lost 1-2 | -211669 |
| 2sealed | 324 | Silva, Anderson Peisoto (1482) | Lost 1-2 | -221647 |
| 4sealed | 250 | De Liz, Rafael Gregorio (1500) | Won 2-0 | +161663 |
| 5sealed | 244 | Bareiro, Carlos (1485) | Lost 1-2 | -221641 |
| top | average opponent: 1492record: 1-3 | new rating: 1641 | ||
| Grand Prix Santiago 2011 (ISD limited) | starting rating: 1689 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 93 | Sifuentes, Francisco (1518) | Won 2-1 | +141703 |
| 3sealed | 15 | Mendoza, Patricio (1536) | Won 2-0 | +151718 |
| 4sealed | 42 | Coqueiro, Rafael S (1727) | Won 2-0 | +191737 |
| 5sealed | 39 | Bassetti, Carlos (1570) | Won 2-1 | +151752 |
| 6sealed | 5 | Sanabio, Sergio (1652) | Lost 0-2 | -201732 |
| 7sealed | 51 | Cespedes, Cristian (1574) | Lost 1-2 | -211711 |
| 8sealed | 77 | Vargas, Nicolas (1553) | Lost 0-2 | -211690 |
| top | average opponent: 1590record: 4-3 | new rating: 1690 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 661 | Otahal, Jiri (1472) | Lost 0-2 | -211631 |
| 2sealed | 722 | Barrett, Lance C (1447) | Won 2-0 | +151646 |
| 3sealed | 676 | Kratena, Ivo (1601) | Lost 0-2 | -191627 |
| 4sealed | 724 | Wagner, Rene (1482) | Won 2-0 | +151642 |
| 5sealed | 663 | Mrkyvka, Tomas (1503) | Won 2-0 | +161658 |
| 6sealed | 630 | Fegert, Klaus (1652) | Won 2-0 | +181676 |
| 7sealed | 562 | Tornros, Mats (1720) | Lost 0-2 | -171659 |
| 8sealed | 613 | Wolf, Stefan (1557) | Won 2-1 | +161675 |
| 9sealed | 565 | Tarnowski, Rafal (1445) | Won 2-0 | +141689 |
| top | average opponent: 1542record: 6-3 | new rating: 1689 | ||
| Grand Prix London 2011 (MBS limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 102 | Yearley, Chris (1500) | Won 2-0 | +151667 |
| 2sealed | 42 | Fetzer, Philip (1637) | Lost 1-2 | -181649 |
| 3sealed | 106 | Chlupac, Zdenek (1527) | Won 2-1 | +151664 |
| 4sealed | 99 | Chaney, Matt (1613) | Lost 0-2 | -181646 |
| 5sealed | 93 | Peraldi, Antoine (1501) | Won 2-0 | +151661 |
| 6sealed | 92 | Stewart, Peter (1522) | Won 2-1 | +151676 |
| 7sealed | 72 | Charlton, Conor (1580) | Won 2-1 | +171693 |
| 8sealed | 51 | Hart, Thomas (1564) | Lost 0-2 | -211672 |
| 9sealed | 43 | Fryer-Kelsey, James (1565) | Lost 0-2 | -201652 |
| top | average opponent: 1557record: 5-4 | new rating: 1652 | ||
| Grand Prix Sao Paulo 2009 (ARB standard) | starting rating: 1659 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 51 | Fernandes Ferraz, Diego (1518) | Won 2-0 | +151674 |
| 4standard | 2 | Damo da Rosa, Paulo Vitor (2055) | Lost 0-2 | -111663 |
| 5standard | 69 | Lopes, Eduardo (1484) | Won 2-0 | +151678 |
| 6standard | 83 | Horta, Lucas Alencar (1503) | Lost 0-0 | -211657 |
| 7standard | 87 | marcelo blanes, (1535) | Won 2-1 | +151672 |
| 8standard | 70 | Fernando Silva, Victor (1538) | Lost 1-2 | -201652 |
| top | average opponent: 1606record: 3-3 | new rating: 1652 | ||
| Grand Prix Buenos Aires 2008 (SHM standard) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 80 | Koenig Mattana, Rafael (1518) | Won 2-1 | +161646 |
| 4standard | 55 | Gutierrez, Jose (1529) | Lost 0-2 | -201626 |
| 5standard | 120 | Camara, Aristides (1560) | Lost 0-2 | -191607 |
| 6standard | 130 | ROTEZYN, MARCOS (1503) | Won 2-0 | +161623 |
| 7standard | 86 | HAJDINJAK, SEBASTIAN (1535) | Won 2-0 | +161639 |
| 8standard | 67 | Edel, Willy (1720) | Won 2-1 | +201659 |
| top | average opponent: 1561record: 4-2 | new rating: 1659 | ||
| Grand Prix Porto Alegre 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2 | Eli, Roberto De Oliveira (1500) | Won 2-0 | +181518 |
| 2sealed | 12 | Sureck, Paulo (1445) | Won 2-1 | +171535 |
| 3sealed | 23 | Vianna, Bruno (1504) | Lost 0-2 | -191516 |
| 4sealed | 76 | Lambertini, Lucio (1520) | Won 2-1 | +181534 |
| 5sealed | 53 | Dos Santos Livramento, Vinicius (1572) | Won 2-0 | +191553 |
| 6sealed | 34 | Andrade, Luiz (1492) | Won 2-1 | +171570 |
| 7sealed | 9 | Romao, Carlos (1837) | ID | 01570 |
| 8rochester | 28 | Soares Tannus, Adriano (1578) | Draw 1-1 | 01570 |
| 9rochester | 9 | Dominguez, Alejandro (1555) | Won 2-0 | +181588 |
| 10rochester | 11 | Olejavetzky, Pablo (1516) | Won 2-1 | +161604 |
| 11rochester | 20 | Damo da Rosa, Paulo Vitor (1788) | Lost 1-2 | -141590 |
| 12rochester | 7 | Romao, Carlos (1820) | Won 2-0 | +221612 |
| 13rochester | 23 | Zimmer, Marco Marcelo (1643) | Won 2-0 | +181630 |
| top | average opponent: 1598record: 9-2-2 | new rating: 1630 | ||