Lachapelle, Geoffrey R
Current rating: 1398
| Grand Prix Toronto 2019 (modern) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 176 | Slater, Andrew (1464) | Lost 0-2 | -171431 |
| 2modern | 416 | Storey, Aiden (1527) | Lost 0-2 | -171414 |
| 3modern | 583 | Golle, Jacob (1493) | Lost 0-2 | -161398 |
| top | average opponent: 1494record: 0-3 | new rating: 1398 | ||
| Grand Prix Toronto 2012 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 244 | Morton, Daniel (1546) | Won 2-1 | +201484 |
| 2modern | 17 | Conacher, Robert (1429) | Lost 1-2 | -191465 |
| 3modern | 304 | Desjardins, Ivan (1489) | Won 2-1 | +181483 |
| 4modern | 291 | Kuras, Sebastian K (1518) | Lost 1-2 | -171466 |
| 5modern | 337 | Danielson, Paul (1500) | Lost 1-2 | -181448 |
| top | average opponent: 1496record: 2-3 | new rating: 1448 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 12 | Wheelan, Beau (1500) | Lost 0-2 | -181482 |
| 2sealed | 218 | Kelly, Chris S (1484) | Lost 1-2 | -181464 |
| 3sealed | 290 | Winter, Michael (1464) | Won 2-0 | +181482 |
| 4sealed | 264 | Hintermeister, Jason (1481) | Lost 0-2 | -181464 |
| top | average opponent: 1482record: 1-3 | new rating: 1464 | ||