Montgomery, Sean
Current rating: 1502
Record: 4-4
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Carroll, Bill M (1500) | Lost 0-2 | -181482 |
| 2standard | 442 | Tyler, Josh (1521) | Won 2-0 | +191501 |
| 3standard | 305 | Abar, Tyler (1501) | Won 2-0 | +181519 |
| 4standard | 322 | Ferguson, Charles (1590) | Lost 0-2 | -171502 |
| 5standard | 275 | McLaughlin, Lindsey (1496) | Lost 1-2 | -181484 |
| 6standard | 391 | Koziski, Alex (1484) | Won 2-1 | +181502 |
| 7standard | 269 | Charvat, Jason (1507) | Won 2-1 | +181520 |
| 8standard | 215 | Mitchell, Devin (1518) | Lost 0-2 | -181502 |
| average opponent: 1515record: 4-4 | new rating: 1502 | |||