Foltz, Jonathan
Current rating: 1489
| Grand Prix Columbus 2019 (modern) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 44 | Kulp, Adam (1500) | Won 2-1 | +181526 |
| 2modern | 64 | Hodgkin, Zac (1567) | Lost 1-2 | -171509 |
| 3modern | 206 | Boyer, Nicholas (1500) | Lost 0-2 | -181491 |
| 4modern | 289 | Floreancig, Benjamin (1484) | Won 2-1 | +181509 |
| 5modern | 154 | Kabbe, Ilona (1522) | Won 2-0 | +181527 |
| 6modern | 161 | Grossman, Michael (1522) | Draw 1-1 | 01527 |
| 7modern | 137 | VanDinter, Nathan (1442) | Lost 0-2 | -201507 |
| 8modern | 138 | Baker, Joshua (1483) | Lost 1-2 | -181489 |
| top | average opponent: 1503record: 3-4-1 | new rating: 1489 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 222 | Sugalski, Bryan (1504) | Lost 0-2 | -181466 |
| 2modern | 372 | Hill, Zeth (1482) | Won 2-0 | +181484 |
| 3modern | 235 | Ta, Braden (1524) | Draw 1-1 | +11485 |
| 4modern | 302 | Fray, James (1500) | Won 2-1 | +181503 |
| 5modern | 204 | Sedberry, Charles (1508) | Won 2-1 | +181521 |
| 6modern | 122 | Pispa, Lauri (1795) | Lost 0-2 | -131508 |
| top | average opponent: 1552record: 3-2-1 | new rating: 1508 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 258 | Warnecke, Gerald (1500) | Won 1-0 | +181518 |
| 2modern | 170 | Pellman, John (1586) | Lost 1-2 | -171501 |
| 3modern | 576 | Dent, Jason (1477) | Draw 1-1 | 01501 |
| 4modern | 520 | Sorrentino, Mike (1522) | Won 2-1 | +181519 |
| 5modern | 355 | Bolding, Jon (1650) | Lost 0-1 | -151504 |
| 6modern | 476 | Specht, Charles (1400) | Lost 0-2 | -201484 |
| top | average opponent: 1523record: 2-3-1 | new rating: 1484 | ||