Mason, Derek
Current rating: 1500
Record: 2-2-1
| Grand Prix Calgary 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 344 | Van Breugel, Benjamin (1486) | Lost 1-2 | -181482 |
| 2modern | 314 | Lozinski, Andrew (1482) | Draw 1-1 | 01482 |
| 3modern | 381 | Van Camp, Cody (1485) | Won 2-0 | +181500 |
| 4modern | 280 | Dafoe, Bryce (1498) | Won 2-1 | +181518 |
| 5modern | 178 | Mah, Fay (1503) | Lost 1-2 | -181500 |
| average opponent: 1491record: 2-2-1 | new rating: 1500 | |||