Barbosa Pereira, Douglas
Current rating: 1476
Record: 8-9
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 272 | Silva De Godoy, Vitor (1449) | Lost 0-2 | -181462 |
| 2modern | 429 | Barbosa, Erick (1481) | Won 2-0 | +181480 |
| 3modern | 295 | Peres, Jose Henrique (1480) | Lost 0-2 | -181462 |
| 4modern | 481 | Serafim, Rodrigo (1398) | Won 2-0 | +171479 |
| 5modern | 325 | Alves Franco, Nadiel (1466) | Lost 0-2 | -181461 |
| 6modern | 459 | Cotte, Rodrigo (1271) | Lost 1-2 | -221439 |
| 7modern | 431 | Pinto, Danilo (1463) | Won 2-0 | +191458 |
| 8modern | 328 | Silva Machado, Douglas (1482) | Won 2-0 | +181476 |
| average opponent: 1436record: 4-4 | new rating: 1476 | |||
| Grand Prix Sao Paulo 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 352 | Beloni, Tobias (1500) | Won 2-1 | +181518 |
| 2modern | 76 | Brasil, Marcus (1583) | Won 2-1 | +191537 |
| 3modern | 128 | Granada, Giovanni (1472) | Lost 1-2 | -191518 |
| 4modern | 274 | Nunes da Silva, Rafael (1429) | Lost 0-2 | -201498 |
| 5modern | 259 | Nunes, Wilson (1497) | Won 2-0 | +181516 |
| 6modern | 296 | Duarte Dos Santos, Flavio (1516) | Won 2-0 | +181534 |
| 7modern | 159 | dos Santos, Everton Fernando (1536) | Lost 0-2 | -181516 |
| 8modern | 199 | Maia, Tiago (1518) | Lost 1-2 | -181498 |
| 9modern | 303 | Luis Fernandes Da Silva, Victor (1498) | Lost 0-2 | -181480 |
| average opponent: 1505record: 4-5 | new rating: 1480 | |||