Impellizzeri, John
Current rating: 1629
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 118 | Kerlin, Robert (1518) | Won 2-1 | +161628 |
| 3modern | 85 | Wyatt, Phil (1625) | Lost 1-2 | -181610 |
| 4modern | 390 | Lennon, Trent (1457) | Draw 1-1 | -31607 |
| 5modern | 542 | Grazier, Jeremy (1606) | Won 2-0 | +181625 |
| 6modern | 350 | Bundens, Justin (1699) | Won 2-1 | +201645 |
| 7modern | 199 | Wechsler, Simon (1747) | Lost 0-2 | -161629 |
| top | average opponent: 1609record: 3-2-1 | new rating: 1629 | ||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1641 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Willmott, Brian (1500) | Lost 0-2 | -211620 |
| 2sealed | 675 | Ioerger, Roderick (1490) | Won 2-0 | +161636 |
| 3sealed | 509 | Gordon, Robert (1501) | Won 2-1 | +151651 |
| 4sealed | 372 | Mondello, Jake (1597) | Lost 0-2 | -191632 |
| 5sealed | 615 | Dekorver, Luke (1502) | Lost 0-2 | -201612 |
| top | average opponent: 1518record: 2-3 | new rating: 1612 | ||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 676 | Chandler, Jake (1500) | Lost 1-2 | -181482 |
| 2standard | 831 | Baker, Dominique (1486) | Won 2-0 | +181500 |
| 3standard | 781 | Dailey, James (1499) | Won 2-0 | +181518 |
| 4standard | 683 | Hernandez, Adam (1518) | Won 2-1 | +181536 |
| 5standard | 629 | Brown, Brad (1536) | Won 2-1 | +181554 |
| 6standard | 481 | Cluphf, Tim (1554) | Won 2-1 | +181572 |
| 7standard | 557 | Welsh, Jared (1574) | Won 2-1 | +181590 |
| 8standard | 523 | Stierman, Steven (1682) | Won 2-0 | +201610 |
| 9standard | 497 | Sullivan, Cameron (1639) | Lost 0-2 | -181592 |
| 10standard | 116 | Combs, Richard (1583) | Won 2-1 | +181610 |
| 11standard | 71 | Mcclain, Josh (1919) | Lost 0-2 | -121598 |
| 12standard | 76 | Hamilton, Michael (1575) | Lost 1-2 | -191579 |
| 13standard | 101 | Bell, Michael (1598) | Won 2-0 | +191598 |
| 14standard | 85 | Denault, Brennan (1590) | Won 2-1 | +171615 |
| 15standard | 64 | Lowry, William (2039) | Won 2-0 | +261641 |
| top | average opponent: 1619record: 11-4 | new rating: 1641 | ||