Guedes, Dave
Current rating: 1464
Record: 1-3
| Grand Prix Vancouver 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 129 | Bundgaard, Kyle (1500) | Won 2-1 | +181518 |
| 2extended | 13 | Bentley, Peter (1518) | Lost 0-2 | -181500 |
| 3extended | 134 | McCarthy, Edward H (1501) | Lost 1-2 | -181482 |
| 4extended | 151 | Kenneth, Johnny (1482) | Lost 0-2 | -181464 |
| average opponent: 1500record: 1-3 | new rating: 1464 | |||