Calkins, Nathan
Current rating: 1538
Record: 4-2-1
| Grand Prix Seattle 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 50 | Wilkie, Steve (1432) | Won 2-1 | +171517 |
| 2extended | 78 | McAlexander, Matt (1515) | Won 2-0 | +181535 |
| 3extended | 48 | Kiene, Thomas (1554) | Won 2-1 | +181553 |
| 4extended | 52 | Lawson, Kevin (1553) | Lost 0-2 | -181535 |
| 5extended | 45 | Stern, Jon (1692) | Won 2-1 | +211556 |
| 6extended | 26 | Woo, Warren (1537) | Lost 0-2 | -181538 |
| 7extended | 74 | Little, Michael (1540) | Draw 1-1 | 01538 |
| average opponent: 1546record: 4-2-1 | new rating: 1538 | |||