Mahlum, Zac
Current rating: 1464
Record: 1-3
| Grand Prix Seattle 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 108 | Kiene, Thomas (1518) | Lost 0-2 | -181482 |
| 2extended | 126 | Arant, Gary (1482) | Lost 1-2 | -181464 |
| 3extended | 150 | Carter, Jay (1464) | Won 2-1 | +181482 |
| 4extended | 153 | Allbee, Christopher (1483) | Lost 0-2 | -181464 |
| average opponent: 1487record: 1-3 | new rating: 1464 | |||