Koym, Deryk
Current rating: 1503
Record: 3-3
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Cooper, Taylor (1500) | Won 2-1 | +181518 |
| 2sealed | 45 | Maines, Matthew (1518) | Won 2-0 | +181536 |
| 3sealed | 77 | Ma, Jesse (1560) | Lost 0-2 | -181518 |
| 4sealed | 416 | Lazarus, Jeremy (1632) | Lost 1-2 | -151503 |
| 5sealed | 669 | Hutchins, David (1499) | Won 2-1 | +171520 |
| 6sealed | 475 | Bianco, Preston (1525) | Lost 1-2 | -171503 |
| average opponent: 1539record: 3-3 | new rating: 1503 | |||