Pfeil, David
Current rating: 1504
Record: 7-8
| Grand Prix Minneapolis 2018 (M19 limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 131 | Zadow, Zachary (1529) | Won 2-0 | +181555 |
| 2sealed | 145 | Preeshl, Tony (1576) | Won 2-1 | +181573 |
| 3sealed | 110 | Yu, Ben (1943) | Lost 0-2 | -111562 |
| 4sealed | 350 | Fischer, William (1518) | Lost 1-2 | -191543 |
| 5sealed | 446 | Guggemos, Jim (1450) | Lost 1-2 | -201523 |
| 6sealed | 420 | Jones, Nathaniel (1431) | Lost 0-2 | -191504 |
| average opponent: 1574record: 2-4 | new rating: 1504 | |||
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Jeong, Jay (1500) | Won 2-0 | +181518 |
| 2sealed | 11 | Pacifico, Andrew (1798) | Won 2-1 | +231541 |
| 3sealed | 90 | Barber, Ian (1650) | Lost 1-2 | -161525 |
| 4sealed | 282 | Kiss, Jason (1429) | Won 2-1 | +161541 |
| 5sealed | 214 | Rubin, Benjamin (1958) | Lost 1-2 | -111530 |
| 6sealed | 281 | Clark, Brennan (1527) | Lost 0-2 | -181512 |
| 7sealed | 343 | Pargh, William (1848) | Won 2-0 | +241536 |
| 8sealed | 244 | Simmons, Fredrick (1530) | Won 2-0 | +181554 |
| 9sealed | 160 | Taylor, Zach (1606) | Lost 0-2 | -171537 |
| average opponent: 1650record: 5-4 | new rating: 1537 | |||