Koop, Mark
Current rating: 1462
Record: 2-4-1
| Grand Prix Calgary 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 23 | Houde, Christian (1500) | Draw 1-1 | 01500 |
| 2modern | 234 | LaPlante, Dominic (1490) | Lost 0-2 | -181482 |
| 3modern | 383 | But, Derek (1398) | Won 2-0 | +161498 |
| 4modern | 275 | Francis, Gabriel (1501) | Lost 0-2 | -181480 |
| 5modern | 339 | Tobin, David (1518) | Won 2-1 | +191499 |
| 6modern | 258 | Burrough, Ben (1500) | Lost 0-2 | -181481 |
| 7modern | 238 | Roberts, Lacey (1431) | Lost 1-2 | -191462 |
| average opponent: 1477record: 2-4-1 | new rating: 1462 | |||