Donaldson, William
Current rating: 1561
Record: 6-3
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 294 | Thompson, Alex (1505) | Won 2-0 | +181518 |
| 2legacy | 94 | Miller, Evan (1628) | Won 2-1 | +201538 |
| 3legacy | 334 | Nguyen, David (1537) | Won 2-0 | +181556 |
| 4legacy | 26 | Laforge, Adam (1453) | Won 2-0 | +161572 |
| 5legacy | 39 | Gerner, James (1559) | Lost 1-2 | -181554 |
| 6legacy | 161 | Barnum, Christopher (1562) | Won 2-1 | +181572 |
| 7legacy | 77 | Parente, Tanner (1662) | Lost 1-2 | -161556 |
| 8legacy | 173 | Sliva, Jon (1550) | Won 2-1 | +181574 |
| 9legacy | 60 | Nass, Matthew (1871) | Lost 0-2 | -131561 |
| average opponent: 1592record: 6-3 | new rating: 1561 | |||