Fonseca, Marcelo
Current rating: 1430
Record: 1-5-1
| Grand Prix Sao Paulo 2018 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 516 | Dallago Pioczcovski, Guilherme (1500) | Lost 0-2 | -171466 |
| 2modern | 508 | Pereira Da Cruz, Felipe Tulio (1482) | Lost 0-2 | -181448 |
| 3modern | 638 | De Franca Ramos, Ricardo (1462) | Lost 1-2 | -181430 |
| average opponent: 1481record: 0-3 | new rating: 1430 | |||
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 116 | Karam, Vinicius (1539) | Lost 0-2 | -171483 |
| 2modern | 243 | Beghine, Leonardo (1447) | Won 2-1 | +171500 |
| 3modern | 252 | Espinosa Dolacio, Rene (1500) | Draw 1-1 | 01500 |
| 4modern | 247 | Pereira, Adriano (1569) | Lost 0-2 | -171483 |
| average opponent: 1514record: 1-2-1 | new rating: 1483 | |||