Williamson, Jacob
Current rating: 1536
Record: 5-3
| Grand Prix New Orleans 2003 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 86 | Thompson, Josh (1500) | Won 2-1 | +181518 |
| 2extended | 12 | Parker, Neil (1608) | Lost 1-2 | -161502 |
| 3extended | 76 | Stone, Dan (1500) | Lost 0-2 | -181484 |
| 4extended | 155 | Karasoulis, Mikhail (1427) | Won 2-0 | +171501 |
| 5extended | 125 | Jahn, Peter (1514) | Lost 1-2 | -181483 |
| 6extended | 126 | Coppage, Jared (1434) | Won 2-0 | +171500 |
| 7extended | 91 | Vuk, Vedran (1501) | Won 2-1 | +181518 |
| 8extended | 77 | Reaves, Marshall Louis (1519) | Won 2-1 | +181536 |
| average opponent: 1500record: 5-3 | new rating: 1536 | |||