Pershall, Jonathan
Current rating: 1552
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 70 | Ball, Nathan (1500) | Lost 1-2 | -181490 |
| 3standard | 328 | Roen, Travis (1465) | Won 2-1 | +171507 |
| 4standard | 192 | Lad, Ravi (1518) | Won 2-0 | +181525 |
| 5standard | 140 | Lachney, Donovan (1500) | Lost 1-2 | -181507 |
| 6standard | 297 | Vassallo, Jack (1530) | Won 2-1 | +181525 |
| 7standard | 134 | Tiongson, Richard (1537) | Won 2-0 | +191544 |
| 8standard | 111 | Reeves, Neil (1982) | Won 2-0 | +251569 |
| 9standard | 75 | Jacob, Conor (1596) | Lost 0-2 | -171552 |
| top | average opponent: 1579record: 5-3 | new rating: 1552 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 176 | Bennett, Sue (1500) | Won 2-1 | +181501 |
| 2standard | 166 | Dalrymple, Justin (1518) | Won 2-1 | +181519 |
| 3standard | 199 | Nguyen, Long (1520) | Won 2-0 | +181537 |
| 4standard | 172 | Dudley, Josh (1483) | Lost 1-2 | -191518 |
| 5standard | 162 | Slaven, Russell (1540) | Lost 1-2 | -171501 |
| 6standard | 331 | Hiett, Johnathan (1418) | Won 2-1 | +161517 |
| 7standard | 237 | Mcclain, Josh (1967) | Won 2-1 | +261543 |
| 8standard | 168 | Bell, Alex (1537) | Lost 0-2 | -181525 |
| 9standard | 235 | Karpyshyn, Drew (1572) | Lost 1-2 | -171508 |
| top | average opponent: 1562record: 5-4 | new rating: 1508 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Grimes, Jason (1500) | Won 2-0 | +181518 |
| 2sealed | 192 | Dalton, Trevor L (1559) | Lost 0-2 | -171501 |
| 3sealed | 287 | Bullock, Jason (1502) | Lost 0-2 | -181483 |
| top | average opponent: 1520record: 1-2 | new rating: 1483 | ||