Thomashefsky, Justin
Current rating: 1514
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 389 | Reyes, Edwin (1500) | Won 2-0 | +181510 |
| 2sealed | 30 | Barnett, Tyler (1614) | Lost 0-2 | -161494 |
| 3sealed | 601 | Knatz, Joshua (1396) | Won 2-0 | +161510 |
| 4sealed | 247 | DiMaggio, Matthew (1718) | Lost 0-2 | -141496 |
| 5sealed | 433 | Gihorski, Zachary (1496) | Won 2-1 | +181514 |
| 6sealed | 296 | Hiles, Christopher (1503) | Won 2-0 | +171531 |
| 7sealed | 269 | Fulmer, Michael (1544) | Lost 1-2 | -171514 |
| top | average opponent: 1539record: 4-3 | new rating: 1514 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1432 | Zhang, Shixian (1500) | Won 2-0 | +191465 |
| 2legacy | 1502 | Hayashi, Fumitaka (1518) | Won 2-0 | +191484 |
| 3legacy | 1515 | Bellucci, Jonathan (1579) | Won 1-0 | +201504 |
| 4legacy | 1501 | Burk, Ryan (1577) | Lost 0-2 | -171487 |
| 5legacy | 1572 | Barra, Joe (1616) | Lost 0-2 | -151472 |
| 6legacy | 1715 | Rianhard, Cain (1554) | Lost 1-2 | -171455 |
| 7legacy | 1731 | Monfre, Dominic (1463) | Won 2-0 | +181473 |
| 8legacy | 1614 | Wilkinson, Ricky (1491) | Won 2-0 | +191492 |
| top | average opponent: 1537record: 5-3 | new rating: 1492 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 294 | Kumor, Patrick (1519) | Lost 1-2 | -181482 |
| 2sealed | 679 | Briggs, Shawn (1482) | Lost 1-2 | -181464 |
| 3sealed | 833 | Rutledge, Macsen (1464) | Lost 0-2 | -181446 |
| top | average opponent: 1488record: 0-3 | new rating: 1446 | ||