Kempfer, Jacob
Current rating: 1562
Record: 9-6
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 39 | Jeng, Dwayne (1514) | Won 2-1 | +181556 |
| 2legacy | 25 | Nguyen, Lee Hung (1484) | Lost 0-2 | -191537 |
| 3legacy | 344 | Cambie-Fabris, Pierluigi (1792) | Won 2-1 | +221559 |
| 4legacy | 280 | Grodzinski, Ryan (1816) | Lost 0-2 | -131546 |
| 5legacy | 343 | Taylor, Pat (1498) | Won 2-1 | +171563 |
| 6legacy | 256 | Walters, Kyle (1469) | Won 2-0 | +161579 |
| 7legacy | 168 | Lynch, Paul (1629) | Lost 1-2 | -171562 |
| average opponent: 1600record: 4-3 | new rating: 1562 | |||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 81 | Saari, Tim (1500) | Lost 1-2 | -181482 |
| 3legacy | 268 | Patrick, Ryan (1500) | Won 2-1 | +181500 |
| 4legacy | 317 | Winchell, Stacy (1501) | Won 2-1 | +181518 |
| 5legacy | 213 | Davis, Gordon (1482) | Won 2-0 | +181536 |
| 6legacy | 121 | Elrod, David (1539) | Won 2-0 | +181554 |
| 7legacy | 33 | Buckingham, James (1677) | Lost 0-2 | -161538 |
| 8legacy | 70 | Ekstrand, Matthew B (1564) | Won 2-1 | +181556 |
| 9legacy | 77 | Borowicz, Brandon (1557) | Lost 0-2 | -181538 |
| average opponent: 1540record: 5-3 | new rating: 1538 | |||