Zwetsch, Marcelo Fernando
Current rating: 1500
Record: 2-2-1
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 54 | Republicano, Luis Gustavo (1500) | Lost 0-2 | -181482 |
| 2modern | 223 | Rodrigues Gomes, Ezequiel (1482) | Won 2-0 | +181500 |
| 3modern | 194 | Langhans De Oliveira, Gabriel (1500) | Won 2-0 | +181518 |
| 4modern | 173 | Damasceno, Joaquim (1519) | Lost 0-2 | -181500 |
| 5modern | 250 | Rodrigues de Lima, Murilo (1500) | Draw 1-1 | 01500 |
| average opponent: 1500record: 2-2-1 | new rating: 1500 | |||