Duarte Barbosa, Gabriel
Current rating: 1407
| Grand Prix Sao Paulo 2019 (modern) | starting rating: 1389 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 75 | Almeida Alves, Daniel (1693) | Won 2-0 | +231412 |
| 2modern | 186 | Rios, Marcos (1691) | Won 2-0 | +231435 |
| 3modern | 225 | Sichelero, Paulo (1453) | Lost 0-2 | -181417 |
| 4modern | 224 | Dutra de Lima, Joao Roberto (1667) | Lost 1-2 | -131404 |
| 5modern | 444 | Minetti, Maximiliano (1506) | Won 2-0 | +201424 |
| 6modern | 356 | Do Prado Fernandes, Hugo (1502) | Lost 0-2 | -171407 |
| top | average opponent: 1585record: 3-3 | new rating: 1407 | ||
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 26 | Silva Campos, Hueliton (1569) | Lost 1-2 | -151413 |
| 4modern | 310 | Echeverria Paredes, Jose Luis (1692) | Lost 0-2 | -131400 |
| 5modern | 335 | Calil De Carvalho Silva, Gustavo (1500) | Won 2-0 | +191419 |
| 6modern | 272 | Francisco Da Silva, Felipe (1521) | Lost 0-2 | -161403 |
| 7modern | 351 | Refosco, Victor (1506) | Lost 1-2 | -161387 |
| 8modern | 352 | Romeiro, Esdras (1480) | Draw 0-0 | +21389 |
| top | average opponent: 1545record: 1-4-1 | new rating: 1389 | ||
| Grand Prix Sao Paulo 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 253 | Dos Santos Livramento, Vinicius (1519) | Lost 0-2 | -181482 |
| 2sealed | 226 | Rogieri Caffaro, Rene (1462) | Lost 0-2 | -181464 |
| 3sealed | 308 | Dermonde Goncalves, Lucas (1464) | Won 2-0 | +181482 |
| 4sealed | 251 | Murakami, Mauricio (1483) | Lost 1-2 | -181464 |
| 5sealed | 286 | Dotta, Artur (1463) | Lost 1-2 | -181446 |
| 6sealed | 257 | Coste, Jose-Carlos P (1448) | Lost 0-2 | -181428 |
| top | average opponent: 1473record: 1-5 | new rating: 1428 | ||