Dvorak, Mathew C
Current rating: 1449
Record: 5-8
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 340 | Petterson, Alex (1500) | Won 2-1 | +181502 |
| 2sealed | 29 | Irwin, Russell (1457) | Lost 1-2 | -181484 |
| 3sealed | 321 | Simard, Jason (1550) | Lost 1-2 | -171467 |
| 4sealed | 477 | Eisenzimmer, Grant (1484) | Lost 1-2 | -181449 |
| average opponent: 1498record: 1-3 | new rating: 1449 | |||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 229 | Fuentes, Jeremy (1631) | Won 2-1 | +201520 |
| 2legacy | 140 | Latif, Mehran (1519) | Lost 1-2 | -181502 |
| 3legacy | 313 | Adkins, Robert (1499) | Lost 1-2 | -181484 |
| 4legacy | 448 | Howard, Daniel (1484) | Won 2-0 | +181502 |
| 5legacy | 284 | Good, John C (1500) | Won 2-0 | +181520 |
| 6legacy | 281 | Montaquila, Nicholas (1519) | Lost 0-2 | -181502 |
| 7legacy | 286 | Ransom, Nick A (1500) | Lost 0-2 | -181484 |
| 8legacy | 235 | Del Prete, Tony (1483) | Won 2-1 | +181502 |
| 9legacy | 180 | White, AJ (1501) | Lost 0-2 | -181484 |
| average opponent: 1515record: 4-5 | new rating: 1484 | |||