Seifried, David
Current rating: 1534
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 607 | Eryman, Alan (1500) | Lost 0-2 | -181504 |
| 2modern | 877 | Sterk, Aaron (1481) | Won 2-0 | +171521 |
| 3modern | 1004 | Broderick, Michael (1479) | Won 2-1 | +171538 |
| 4modern | 643 | Marmo, Timothy (1450) | Won 2-0 | +171555 |
| 5modern | 340 | Johnson, Steve (1504) | Lost 1-2 | -191536 |
| 6modern | 402 | Semeyn, Jonathan (1522) | Lost 0-2 | -181518 |
| 7modern | 560 | Kotscharjan, Greg (1451) | Won 2-0 | +161534 |
| 8modern | 441 | Lynch, John (1512) | Lost 0-2 | -181516 |
| 9modern | 453 | Pluff, Michael (1512) | Won 2-0 | +181534 |
| top | average opponent: 1490record: 5-4 | new rating: 1534 | ||
| Grand Prix Omaha 2015 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 185 | Williams, Greg (1534) | Won 2-1 | +191503 |
| 4modern | 112 | Nguyen, Justin (1711) | Lost 0-2 | -141489 |
| 5modern | 171 | Richardson, Chris (1509) | Won 2-0 | +181507 |
| 6modern | 113 | Carlson, Lukas (1759) | Lost 0-2 | -131494 |
| 7modern | 198 | Wynn, Emily (1560) | Won 2-0 | +191513 |
| 8modern | 62 | Ayers, Brandon (1881) | Won 2-1 | +241537 |
| 9modern | 40 | Stierman, Steven (1693) | Lost 1-2 | -151522 |
| top | average opponent: 1664record: 4-3 | new rating: 1522 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1044 | Delgado, Josiah (1463) | Won 2-0 | +171517 |
| 2modern | 731 | Vandehey, Gerald (1518) | Lost 1-2 | -181499 |
| 3modern | 1129 | Callanta, Louise (1525) | Won 2-1 | +191518 |
| 4modern | 1049 | Machado, Kyle (1552) | Lost 0-2 | -181500 |
| 5modern | 1024 | Countryman, Joseph (1590) | Lost 1-2 | -161484 |
| top | average opponent: 1530record: 2-3 | new rating: 1484 | ||