Sobnosky, Robert
Current rating: 1482
Record: 4-5
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 546 | Varshavsky, Misha (1563) | Lost 1-2 | -171482 |
| 2modern | 824 | Smith, Alexander (1482) | Lost 0-2 | -181464 |
| 3modern | 1169 | Owens, Matthew (1456) | Won 2-1 | +181482 |
| average opponent: 1500record: 1-2 | new rating: 1482 | |||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 533 | Hiatt, Shane (1500) | Won 2-1 | +181518 |
| 2standard | 711 | Denault, Brennan (1500) | Lost 0-2 | -181500 |
| 3standard | 753 | Acunal, Alex (1500) | Won 2-1 | +181518 |
| 4standard | 782 | Hamel, Jared (1521) | Lost 0-2 | -181500 |
| 5standard | 869 | Kasper, Leo (1503) | Won 2-1 | +181518 |
| 6standard | 601 | Edwards, David (1456) | Lost 1-2 | -191499 |
| average opponent: 1497record: 3-3 | new rating: 1499 | |||