Huffman, Justin
Current rating: 1481
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 43 | Wallace, Regis (1436) | Lost 0-2 | -201522 |
| 2standard | 225 | Klopping, Dustin (1395) | Won 2-0 | +151537 |
| 3standard | 318 | Barge, Spencer (1636) | Lost 0-2 | -161521 |
| 4standard | 388 | Mincucci, Nick (1402) | Lost 0-2 | -201501 |
| 5standard | 401 | Cullerton, Evan (1378) | Lost 0-2 | -201481 |
| top | average opponent: 1449record: 1-4 | new rating: 1481 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 927 | Lee, An-Jen (1500) | Lost 1-2 | -181488 |
| 2legacy | 1068 | Taveras, Edward (1461) | Won 2-0 | +181506 |
| 3legacy | 1201 | Bergan, Gerald (1361) | Won 2-1 | +151521 |
| 4legacy | 1072 | Anderson, William E (1521) | Draw 1-1 | 01521 |
| 5legacy | 835 | Meikle, Jeremy (1548) | Lost 0-2 | -181503 |
| 6legacy | 941 | Weber, Kyle (1495) | Won 2-1 | +181521 |
| 7legacy | 822 | Lin, David (1575) | Won 2-1 | +191540 |
| 8legacy | 740 | Heilker, David (1617) | Won 2-1 | +201560 |
| 9legacy | 680 | Wallace, Adam (1554) | Lost 0-2 | -181542 |
| top | average opponent: 1515record: 5-3-1 | new rating: 1542 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 11 | McGrogan, Kyle (1556) | Lost 1-2 | -171483 |
| 5sealed | 165 | Koren, Steven (1535) | Won 2-0 | +191502 |
| 6sealed | 72 | Dedych, Luke P (1555) | Lost 0-2 | -171485 |
| 7sealed | 128 | Cudia, Ben (1501) | Won 2-1 | +181503 |
| 8sealed | 118 | Kazhdan, Joseph (1576) | Won 2-1 | +201523 |
| 9sealed | 38 | Edwards, Cassidy (1614) | Lost 0-2 | -171506 |
| top | average opponent: 1556record: 3-3 | new rating: 1506 | ||