Mackenzie, Steven
Current rating: 1416
| Grand Prix Toronto 2017 (HOU limited) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 260 | Pielecki, Karol (1443) | Draw 1-1 | 01429 |
| 2sealed | 318 | Keffer, Stella (1442) | Lost 0-2 | -181411 |
| 3sealed | 573 | Winata, Andrew (1526) | Lost 0-2 | -161395 |
| 4sealed | 613 | Kemble, Andrew (1335) | Won 2-0 | +171412 |
| 5sealed | 504 | Bisson, Stephane (1571) | Won 2-1 | +211433 |
| 6sealed | 398 | Fortier, Chris (1504) | Lost 1-2 | -171416 |
| top | average opponent: 1470record: 2-3-1 | new rating: 1416 | ||
| Grand Prix Toronto 2016 (SOI standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 55 | Weeks, Will (1500) | Lost 1-2 | -181444 |
| 2standard | 549 | Moreau, Ryan (1482) | Lost 0-2 | -171427 |
| 3standard | 656 | Raska, Mark (1465) | Lost 1-2 | -171410 |
| 4standard | 685 | Cross, Jessica (1462) | Won 2-1 | +191429 |
| top | average opponent: 1477record: 1-3 | new rating: 1429 | ||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 375 | Zidar, Lisa (1449) | Lost 0-2 | -191481 |
| 2standard | 532 | Roy, Jean-Philippe (1470) | Won 2-1 | +181499 |
| 3standard | 507 | Burling, Andrew (1500) | Lost 1-2 | -181481 |
| 4standard | 641 | Smith, John (1407) | Lost 0-2 | -191462 |
| top | average opponent: 1457record: 1-3 | new rating: 1462 | ||