Duraes Ferreira, Guilherme
Current rating: 1610
Record: 16-10
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 81 | Da Silva, Elton Carlo (1535) | Won 2-0 | +161616 |
| 4modern | 6 | Gasparini, Felipe (1761) | Won 2-0 | +211637 |
| 5modern | 5 | Moreira Sales, Ramon (1556) | Lost 1-2 | -191618 |
| 6modern | 58 | Floriano Teixeira, Alan (1554) | Won 2-1 | +161634 |
| 7modern | 59 | Vidal Lopes, Leonardo (1598) | Won 2-0 | +181652 |
| 8modern | 20 | Freidinger, Victor (1528) | Lost 1-2 | -211631 |
| 9modern | 50 | Mazzero, Thomas (1542) | Lost 1-2 | -191612 |
| 10modern | 96 | Pinheiro, Lucas (1556) | Won 2-1 | +171629 |
| 11modern | 78 | Goulart de Andrade, Andre Filipe (1559) | Won 2-1 | +171646 |
| 12modern | 45 | Cesar Siqueira, Jorge Henrique (1789) | Lost 0-2 | -161630 |
| 13modern | 61 | Resende Moreira, Rodrigo (1517) | Lost 0-2 | -201610 |
| average opponent: 1590record: 6-5 | new rating: 1610 | |||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 82 | Monea, Guilherme (1506) | Lost 0-2 | -181482 |
| 2modern | 609 | Careli, Michael (1378) | Won 2-0 | +161498 |
| 3modern | 475 | Rodrigues, Everton (1448) | Won 2-0 | +171515 |
| 4modern | 306 | Bueno, Marcelo Henrique (1580) | Won 2-1 | +191534 |
| 5modern | 159 | Carrara, Leonardo (1524) | Lost 0-2 | -181516 |
| 6modern | 200 | Zborowski, Felipe Augusto (1701) | Won 2-1 | +221538 |
| 7modern | 237 | De Sousa Silva, Rodrigo (1531) | Won 2-0 | +181556 |
| 8modern | 171 | Dos Santos, Pablo (1625) | Won 2-1 | +191575 |
| 9modern | 62 | Agorreto, Luka (1548) | Won 2-1 | +171592 |
| 10modern | 49 | Lopes, Carlos (1577) | Lost 1-2 | -181574 |
| 11modern | 77 | Tostes Lemos, Rodolfo (1577) | Lost 1-2 | -181556 |
| 12modern | 84 | Mediano, Diego (1675) | Won 2-1 | +201576 |
| 13modern | 57 | Gaspar Goncalves, Rafael (1579) | Won 2-1 | +181594 |
| 14modern | 50 | Schmitt, Augusto (1594) | Won 2-1 | +181612 |
| 15modern | 41 | Casatti, Vagner William (1913) | Lost 0-2 | -121600 |
| average opponent: 1584record: 10-5 | new rating: 1600 | |||