Kopf, Jonathan
Current rating: 1426
Record: 2-6
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 456 | Goodrick, Rory (1500) | Won 2-1 | +181518 |
| 2modern | 184 | Roohi, Arya (1696) | Lost 0-2 | -151503 |
| 3modern | 530 | Newton, Clifford (1340) | Won 2-1 | +151518 |
| 4modern | 245 | Julian, Robert D (1523) | Lost 0-2 | -181500 |
| 5modern | 546 | Galliano, Alexandre (1521) | Lost 0-2 | -171483 |
| 6modern | 526 | Lepper, Lantz (1412) | Lost 0-2 | -201463 |
| 7modern | 461 | Burke, Stephen (1399) | Lost 0-2 | -191444 |
| 8modern | 400 | Pirkle, Mark (1450) | Lost 1-2 | -181426 |
| average opponent: 1480record: 2-6 | new rating: 1426 | |||