Mack, Jason
Current rating: 1446
Record: 1-4
| Grand Prix Oakland 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 133 | Beer, Shane (1500) | Lost 0-2 | -181482 |
| 2sealed | 162 | Bare, Erik (1482) | Lost 0-2 | -181464 |
| 3sealed | 182 | Allen, Roy (1463) | Won 2-0 | +181482 |
| 4sealed | 144 | Ramsey, Alan (1500) | Lost 0-2 | -181464 |
| 5sealed | 166 | Huang, Jeff (1467) | Lost 1-2 | -181446 |
| average opponent: 1482record: 1-4 | new rating: 1446 | |||