Pifko, David
Current rating: 1686
Record: 16-7
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1660 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 154 | Strasbourg, Brent (1500) | Lost 1-2 | -211639 |
| 2sealed | 188 | Bayer-Braswell, Ian (1457) | Won 2-0 | +151654 |
| 3sealed | 194 | Pargh, William (1899) | Lost 0-2 | -141640 |
| 4sealed | 297 | Shea, Ed (1468) | Won 2-0 | +151655 |
| 5sealed | 234 | Larson, Erik (1487) | Won 2-0 | +151670 |
| 6sealed | 195 | Licavoli, Steve (1494) | Won 2-0 | +151685 |
| 7sealed | 143 | Ellery, Robert (1542) | Won 2-0 | +151700 |
| 8sealed | 63 | Krut, Isaak (1883) | Lost 0-2 | -141686 |
| average opponent: 1591record: 5-3 | new rating: 1686 | |||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Darcy, Michael (1456) | Lost 1-2 | -191481 |
| 2sealed | 263 | Baraona, Mike (1482) | Won 2-0 | +181499 |
| 3sealed | 353 | Aiello, Justin (1631) | Won 2-1 | +211520 |
| 4sealed | 254 | Vorel, Andrew (1746) | Won 2-0 | +221542 |
| 5sealed | 97 | Gray, George (1567) | Won 2-0 | +181560 |
| 6sealed | 177 | Schaffer, Joshua (1470) | Won 2-0 | +161576 |
| 7sealed | 64 | Ernst, David (1562) | Won 2-1 | +181594 |
| 8sealed | 51 | Elenbogen, Andrew (2105) | Won 2-1 | +271621 |
| 9sealed | 12 | Pham, Nhi (1694) | Won 2-0 | +191640 |
| 10draft | 6 | Wilson, Levi (1719) | Won 2-0 | +201660 |
| 11draft | 37 | Kvartek, Chris (1933) | Won 2-1 | +221682 |
| 12draft | 31 | Takahashi, Yuta (1917) | Won 2-0 | +231705 |
| 13draft | 1 | Watts, Andrew (1979) | Lost 0-2 | -131692 |
| 14draft | 1 | Darby, Wyatt (1970) | Lost 0-2 | -141678 |
| 15draft | 1 | Daley, Max (1659) | Lost 1-2 | -181660 |
| average opponent: 1726record: 11-4 | new rating: 1660 | |||