Halford, John D
Current rating: 1428
Record: 0-4
| Grand Prix Minneapolis 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Montgomery, Kyle (1522) | Lost 0-2 | -181482 |
| 2sealed | 460 | Sarsfield, Corey (1468) | Lost 1-2 | -181464 |
| 3sealed | 482 | Wusuf, Arun (1465) | Lost 1-2 | -181446 |
| 4sealed | 507 | Miller, Anthony (1447) | Lost 1-2 | -181428 |
| average opponent: 1476record: 0-4 | new rating: 1428 | |||