Dumais, Guillaume
Current rating: 1481
Record: 2-3
| Grand Prix Montreal 2007 (Time Spiral block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 116 | Artzy, Noa (1500) | Lost 1-2 | -181482 |
| 2block | 202 | Bluman-Soued, David (1482) | Won 2-0 | +181500 |
| 3block | 132 | Klein, Matthew (1483) | Lost 1-2 | -181482 |
| 4block | 303 | Pennock, Aaron (1481) | Won 2-1 | +181500 |
| 5block | 228 | Olmeda, Justin C (1466) | Lost 0-1 | -191481 |
| average opponent: 1482record: 2-3 | new rating: 1481 | |||