Roberson, Matthew
Current rating: 1398
Record: 1-7
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 829 | Ragle, William (1461) | Lost 0-2 | -171429 |
| 2modern | 849 | Uong, Michael (1499) | Lost 1-2 | -171412 |
| 3modern | 1125 | Morici, Evan (1463) | Won 2-0 | +191431 |
| 4modern | 884 | Regan, Christian (1541) | Lost 1-2 | -161415 |
| 5modern | 1090 | Evans, Richard (1463) | Lost 1-2 | -171398 |
| average opponent: 1485record: 1-4 | new rating: 1398 | |||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 423 | Dayoub, Steven (1483) | Lost 1-2 | -181482 |
| 2sealed | 412 | Sullivan, Liam K (1526) | Lost 0-2 | -181464 |
| 3sealed | 680 | Romesburg III, Harry (1464) | Lost 1-2 | -181446 |
| average opponent: 1491record: 0-3 | new rating: 1446 | |||