Kokx, Jeff
Current rating: 1516
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 80 | Case, William F (1518) | Lost 0-2 | -181534 |
| 3sealed | 110 | Plurkowski, Luke (1584) | Lost 0-2 | -181516 |
| top | average opponent: 1551record: 0-2 | new rating: 1516 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 105 | Hendricks, Ryan (1554) | Lost 0-2 | -191537 |
| 2sealed | 224 | Potter, James (1429) | Won 2-0 | +161553 |
| 3sealed | 148 | Fraley, Aj (1500) | Won 2-1 | +181571 |
| 4sealed | 128 | Najafpoor, Omid (1551) | Lost 0-2 | -191552 |
| top | average opponent: 1508record: 2-2 | new rating: 1552 | ||
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Sweeney, Jack (1500) | Won 2-0 | +181518 |
| 2sealed | 12 | Barnes, Michael (1483) | Draw 1-1 | -11517 |
| 3sealed | 79 | Carlson, Corey (1542) | Lost 1-2 | -171500 |
| 4sealed | 155 | morgan, ben (1515) | Won 2-1 | +181518 |
| 5sealed | 112 | Gardner, Jayson (1503) | Won 2-0 | +181536 |
| 6sealed | 72 | Rawson, Nate (1535) | Won 2-0 | +181554 |
| 7sealed | 46 | Hovis, Ryan (1571) | Lost 1-2 | -181536 |
| 8sealed | 70 | Hamilton, Michael 2 (1613) | Won 2-1 | +201556 |
| top | average opponent: 1533record: 5-2-1 | new rating: 1556 | ||