Coffer, Deborah
Current rating: 1509
Record: 4-4
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 496 | Tetlow, Adam (1705) | Lost 1-2 | -141486 |
| 2modern | 664 | Taylor, Mark (1538) | Won 2-0 | +191505 |
| 3modern | 1256 | Zurawski, Alex (1620) | Won 2-0 | +201525 |
| 4modern | 561 | Crowder, Daniel (1547) | Lost 0-2 | -181507 |
| 5modern | 833 | Alane, Joseph (1580) | Won 2-0 | +191526 |
| 6modern | 932 | Ho, Anthony (1669) | Lost 0-2 | -151511 |
| 7modern | 849 | Bosarreyes, Jason (1465) | Won 2-1 | +171528 |
| 8modern | 655 | Aker, Zachery (1458) | Lost 1-2 | -191509 |
| average opponent: 1573record: 4-4 | new rating: 1509 | |||