Simpson, Justin
Current rating: 1536
Record: 11-9-1
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 7 | Thomas, William R (1518) | Won 2-0 | +181555 |
| 3sealed | 63 | Starling, Charles (1579) | Lost 0-2 | -181537 |
| 4sealed | 98 | Coulson, Phil (1516) | Won 2-1 | +181555 |
| 5sealed | 58 | Sanchez, Kyle (1546) | Lost 0-2 | -191536 |
| top | average opponent: 1540record: 2-2 | new rating: 1536 | ||
| Grand Prix Charlotte 2005 (extended) | starting rating: 1578 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 10 | Aranami, Naoto (1467) | Lost 0-2 | -201558 |
| 2extended | 142 | Vaughan, Anthony (1482) | Draw 1-1 | -11557 |
| 3extended | 157 | Jack, Nathaniel (1449) | Lost 0-2 | -201537 |
| top | average opponent: 1466record: 0-2-1 | new rating: 1537 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 124 | Christiansen, Nico (1500) | Won 2-0 | +181501 |
| 2extended | 95 | Wilson, Seth (1500) | Won 2-1 | +181519 |
| 3extended | 109 | Davis, Jim (1525) | Won 2-1 | +181537 |
| 4extended | 21 | Moloughney, David (1555) | Lost 0-2 | -171520 |
| 5extended | 76 | Miller, Stephen (1647) | Won 2-1 | +201540 |
| 6extended | 30 | Sharfman, David (1518) | Won 2-1 | +181558 |
| 7extended | 41 | Buck, Thomas (1521) | Won 2-1 | +171575 |
| 8extended | 22 | Krumb, Michael (1790) | Lost 0-2 | -141561 |
| 9extended | 28 | Barnett, Noah (1527) | Won 2-0 | +171578 |
| top | average opponent: 1565record: 7-2 | new rating: 1578 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 170 | Schofield, Bryan (1500) | Lost 1-2 | -181482 |
| 2sealed | 176 | Davison, Ben (1482) | Won 2-0 | +181500 |
| 3sealed | 140 | Reed, Bob (1500) | Won 2-1 | +181518 |
| 4sealed | 110 | Kelsey, Chris (1595) | Lost 1-2 | -171501 |
| 5sealed | 167 | Lim, Brandon (1483) | Lost 1-2 | -181483 |
| top | average opponent: 1512record: 2-3 | new rating: 1483 | ||