Pettigrew, Robia
Current rating: 1412
| Grand Prix Charlotte 2015 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 982 | South-Finkelstein, Sam (1481) | Lost 0-1 | -181464 |
| 2modern | 1059 | Cagwin, Evan (1510) | Lost 0-2 | -181446 |
| 3modern | 1121 | Reichley, Matthew (1464) | Lost 0-2 | -171429 |
| 4modern | 1122 | Adkins, Carlos (1445) | Lost 1-2 | -181411 |
| 5modern | 1035 | Gilford, Johnathan (1428) | Won 2-1 | +181429 |
| 6modern | 974 | Perez, Manuel M (1446) | Lost 0-2 | -171412 |
| top | average opponent: 1462record: 1-5 | new rating: 1412 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 348 | McCandless, Andrew (1560) | Lost 1-2 | -171457 |
| 3modern | 470 | Drury, Brandon (1519) | Won 2-1 | +191476 |
| 4modern | 440 | Trottier, Charles (1668) | Won 2-1 | +221498 |
| 5modern | 284 | Oliver, Jon (1535) | Lost 1-2 | -171481 |
| 6modern | 246 | Akers, Jeffrey (1498) | Won 2-0 | +181499 |
| 7modern | 199 | Senter, Brandon (1534) | Lost 1-2 | -171482 |
| top | average opponent: 1553record: 3-3 | new rating: 1482 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 18 | Pecora, Gerald (1600) | Lost 1-2 | -161484 |
| 4legacy | 466 | Cho, Joshua (1747) | Won 2-0 | +231507 |
| 5legacy | 745 | Kwan, Michael (1686) | Lost 0-2 | -151492 |
| 6legacy | 319 | Keates, Jason (1526) | Won 2-1 | +181510 |
| 7legacy | 386 | Markowicz, Eric (1490) | Lost 0-2 | -181492 |
| 8legacy | 379 | Tanner, Adam (1477) | Lost 0-2 | -181474 |
| top | average opponent: 1588record: 2-4 | new rating: 1474 | ||