Brefka, Casey
Current rating: 1525
Record: 8-7-1
| Grand Prix Louisville 2017 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 338 | Wert, Jackson (1539) | Won 2-1 | +191483 |
| 2legacy | 519 | Wright, Christian (1585) | Won 2-1 | +201503 |
| 3legacy | 343 | Kuchinski, Edward (1534) | Draw 1-1 | +11504 |
| 4legacy | 478 | Summerlin, Aubrey (1578) | Won 2-1 | +191523 |
| 5legacy | 376 | Dreher, Gregory (1541) | Won 2-0 | +191542 |
| 6legacy | 326 | Saer, James (1496) | Won 2-1 | +171559 |
| 7legacy | 303 | Cox, Dustin (1404) | Won 2-0 | +151574 |
| 8legacy | 289 | Brant, Sawyer (1604) | Lost 0-2 | -181556 |
| 9legacy | 324 | Morrissey, Ryan (1490) | Lost 1-2 | -191537 |
| 10legacy | 1112 | Accetturo, Vince (1723) | Lost 0-2 | -141523 |
| 11legacy | 1171 | Haywood, Jeremiah (1535) | Won 2-0 | +181541 |
| 12legacy | 1115 | Schlegel, Thomas (1642) | Lost 1-2 | -161525 |
| average opponent: 1556record: 7-4-1 | new rating: 1525 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Trottier, Charles (1500) | Lost 0-2 | -181482 |
| 2sealed | 290 | Shea, Ethan (1482) | Won 2-0 | +181500 |
| 3sealed | 167 | Roche, Steven M (1503) | Lost 1-2 | -181482 |
| 4sealed | 312 | Evans, Michael J (1482) | Lost 0-2 | -181464 |
| average opponent: 1492record: 1-3 | new rating: 1464 | |||