Gregory, Jack G
Current rating: 1482
Record: 3-4-2
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 245 | Spicer, Scott (1500) | Won 2-0 | +181518 |
| 2sealed | 40 | Trevor M., (1518) | Draw 1-1 | 01518 |
| 3sealed | 311 | Dubois, Joe (1536) | Lost 1-2 | -181500 |
| 4sealed | 581 | Arocho, Alfredo (1500) | Lost 0-2 | -181482 |
| 5sealed | 674 | Kanapaska, CJ (1481) | Draw 1-1 | 01482 |
| 6sealed | 608 | Gregory, Jason (1483) | Lost 0-2 | -181464 |
| 7sealed | 513 | Schapurga, Mike (1466) | Lost 1-2 | -181446 |
| 8sealed | 407 | McGilvray, Philip (1410) | Won 2-0 | +181464 |
| 9sealed | 331 | Claudel Sr, Slater (1467) | Won 2-1 | +181482 |
| average opponent: 1485record: 3-4-2 | new rating: 1482 | |||