Hundertmark, Roberto
Current rating: 1538
Record: 5-3
| Grand Prix Porto Alegre 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 42 | Britez, Maximiliano (1488) | Won 2-1 | +181518 |
| 2modern | 53 | Appel, Eder Vlamir (1667) | Lost 0-2 | -161502 |
| 3modern | 205 | Campos, Lucas Francisco (1500) | Won 2-1 | +181520 |
| 4modern | 194 | de Souza Kress, Eduardo Henrique (1482) | Won 2-0 | +181538 |
| 5modern | 132 | Lopes, Adriano (1503) | Lost 1-2 | -191519 |
| 6modern | 192 | Scarpe Simao, Renan (1517) | Won 2-0 | +181537 |
| 7modern | 109 | Iglesias, Fernando (1541) | Won 2-1 | +181555 |
| 8modern | 97 | Teixeira Junior, Edson (1613) | Lost 1-2 | -171538 |
| average opponent: 1539record: 5-3 | new rating: 1538 | |||