Castonguay, David
Current rating: 1443
Record: 1-4
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 330 | Wilson, Chris (1349) | Lost 1-2 | -211479 |
| 2standard | 445 | Duan, Richard (1482) | Lost 1-2 | -181461 |
| 3standard | 664 | Fortier, William (1463) | Won 2-0 | +181479 |
| 4standard | 562 | Shoemaker, William (1483) | Lost 0-2 | -181461 |
| 5standard | 664 | Dela Cruz, Randolph (1463) | Lost 0-2 | -181443 |
| average opponent: 1448record: 1-4 | new rating: 1443 | |||