Main, William
Current rating: 1499
Record: 3-3
| Grand Prix Calgary 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 52 | Snippa, Amy (1500) | Won 2-0 | +181518 |
| 2modern | 146 | Sevier, Scott (1520) | Lost 0-2 | -181500 |
| 3modern | 244 | Smith, Kellen (1430) | Won 2-0 | +171517 |
| 4modern | 221 | Hankins, Steven (1536) | Lost 0-2 | -181499 |
| 5modern | 248 | Corpuz, Joshua (1499) | Won 2-0 | +181517 |
| 6modern | 152 | Rosenthal, Simon (1520) | Lost 0-2 | -181499 |
| average opponent: 1501record: 3-3 | new rating: 1499 | |||