Kauffman, Ken
Current rating: 1644
Record: 13-7-1
| Grand Prix Austin 2020 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 117 | Macaraeg, Tad (1808) | Lost 1-2 | -131527 |
| 4modern | 125 | Kohrt, Ronnie (1545) | Won 2-0 | +181545 |
| 5modern | 98 | Collister, Jason (1425) | Won 2-0 | +161561 |
| 6modern | 72 | Fernandez, Rodolfo (1516) | Won 2-0 | +171578 |
| 7modern | 25 | Myers, William (1639) | Won 2-1 | +191597 |
| 8modern | 25 | Berkenbile, Sam (1933) | Lost 1-2 | -121585 |
| 9modern | 61 | Kominowski, Sam (1670) | Won 2-0 | +201605 |
| 10modern | 108 | Zurawski, Alex (1884) | Won 2-0 | +231628 |
| 11modern | 98 | Plantz, Ian (1864) | Won 2-0 | +221650 |
| 12modern | 102 | Fischer, Dana (1424) | Won 2-0 | +141664 |
| 13modern | 94 | Clark, Austin (1777) | Draw 1-1 | +21666 |
| 14modern | 91 | Wu, Allen (2202) | Lost 0-2 | -91657 |
| 15modern | 96 | Ahn, Sung-Jin (1944) | Lost 0-2 | -131644 |
| average opponent: 1741record: 8-4-1 | new rating: 1644 | |||
| Grand Prix Oakland 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 199 | Wang, Tony (1543) | Lost 0-2 | -171483 |
| 2modern | 394 | Edmunds, Ellis (1669) | Lost 1-2 | -151468 |
| 3modern | 529 | Jackson, Jake (1465) | Won 2-1 | +181486 |
| 4modern | 465 | Monay, Mark Bryan (1466) | Won 2-1 | +181504 |
| 5modern | 303 | Bahu, Rasool (1506) | Won 2-0 | +181522 |
| 6modern | 249 | Gage, Mark (1512) | Won 2-1 | +181540 |
| 7modern | 176 | Aggarwal, Luke (1611) | Won 2-0 | +191559 |
| 8modern | 96 | Pho, Brandon (1506) | Lost 1-2 | -191540 |
| average opponent: 1535record: 5-3 | new rating: 1540 | |||