Withey, Jacob
Current rating: 1532
Record: 7-6-1
| Grand Prix Providence 2018 (M19 standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 115 | Andrea, Craig (1500) | Draw 1-1 | 01509 |
| 2standard | 140 | Greer, Michael (1500) | Won 2-1 | +181527 |
| 3standard | 191 | Jiang, Zhihao (1491) | Won 2-1 | +171544 |
| 4standard | 103 | Ferry, Sergio (1722) | Lost 0-2 | -141530 |
| 5standard | 176 | Watterson, Garrett (1517) | Won 2-0 | +171547 |
| 6standard | 116 | Shukla, Neeraj (1704) | Lost 0-2 | -151532 |
| average opponent: 1572record: 3-2-1 | new rating: 1532 | |||
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Arthurs, Marshall (1844) | Won 2-0 | +241524 |
| 2standard | 95 | Vogt, Bradley (1600) | Lost 1-2 | -171507 |
| 3standard | 334 | Balluch, Kyle (1435) | Won 2-1 | +171524 |
| 4standard | 305 | Pesta, Palmer (1519) | Won 2-1 | +181542 |
| 5standard | 97 | Heckert, Jakob (1453) | Lost 1-2 | -201522 |
| 6standard | 167 | Crovo, Christopher (1524) | Won 2-1 | +181540 |
| 7standard | 146 | Asbach, John (1804) | Lost 0-2 | -131527 |
| 8standard | 170 | Bishop, Luke (1547) | Lost 0-2 | -181509 |
| average opponent: 1591record: 4-4 | new rating: 1509 | |||