Peterson, Derick W
Current rating: 1483
Record: 2-3
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 112 | Dickinson, Geoffrey (1500) | Won 2-0 | +181518 |
| 2sealed | 140 | Rogganbuck, Scott (1518) | Lost 1-2 | -181500 |
| 3sealed | 275 | Cooper, Simon W (1561) | Lost 1-2 | -171483 |
| 4sealed | 432 | Soule, Nathan (1483) | Won 2-0 | +181501 |
| 5sealed | 403 | Sobieray, Andrew (1499) | Lost 0-2 | -181483 |
| average opponent: 1512record: 2-3 | new rating: 1483 | |||