Jeffcott, John
Current rating: 1473
Record: 4-6-1
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 326 | Jernigan, Nicholas (1500) | Lost 0-2 | -181510 |
| 2standard | 382 | Pienkny, Jedidiah (1480) | Lost 0-2 | -191491 |
| 3standard | 713 | Bennett, Crystal (1466) | Lost 0-2 | -181473 |
| average opponent: 1482record: 0-3 | new rating: 1473 | |||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 183 | Butler, Colin (1500) | Won 2-0 | +181518 |
| 2sealed | 160 | Cutrone, Michael (1624) | Draw 1-1 | +21520 |
| 3sealed | 390 | Rivenbark, Cody (1518) | Lost 0-2 | -181502 |
| 4sealed | 545 | Galloway, Nicholas (1446) | Won 2-1 | +171519 |
| 5sealed | 377 | Jones, Kevin (1836) | Won 2-0 | +231542 |
| 6sealed | 244 | Kavi, Ankit (1539) | Won 2-1 | +181560 |
| 7sealed | 150 | Corrigan, Griffin (1734) | Lost 0-2 | -141546 |
| 8sealed | 258 | Wen, Ming (1588) | Lost 1-2 | -181528 |
| average opponent: 1598record: 4-3-1 | new rating: 1528 | |||