MacKenzie, Lester
Current rating: 1598
Record: 13-8
| Grand Prix Calgary 2019 (modern) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 165 | Suppes, Graeme (1403) | Won 2-1 | +151579 |
| 2modern | 191 | Guenther, Grant (1516) | Won 2-1 | +171596 |
| 3modern | 159 | Malina, Joel (1544) | Won 2-0 | +171613 |
| 4modern | 79 | Ross, Stuart (1568) | Lost 1-2 | -191594 |
| 5modern | 126 | Sparks, Dorian (1395) | Won 2-0 | +151609 |
| 6modern | 51 | Webber, Spencer (1554) | Won 2-0 | +171626 |
| 7modern | 18 | Friedman, Ben (2051) | Lost 1-2 | -111615 |
| 8modern | 46 | Kiss, Roland (1650) | Lost 1-2 | -171598 |
| average opponent: 1585record: 5-3 | new rating: 1598 | |||
| Grand Prix Toronto 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 232 | Tomajko, Gabriel (1500) | Won 2-1 | +181518 |
| 2modern | 79 | Morrow, Chris (1310) | Won 2-0 | +141532 |
| 3modern | 73 | Alarie, Sebastien (1601) | Won 2-0 | +201552 |
| 4modern | 78 | Morissette, Alexandre (1554) | Won 2-0 | +181570 |
| 5modern | 88 | Bedell, Rodney (1651) | Won 2-0 | +191589 |
| 6modern | 25 | Zhang, Jonathan (1518) | Lost 0-2 | -191570 |
| 7modern | 130 | Jung, Theodore (1520) | Won 2-0 | +171587 |
| 8modern | 38 | Spencer, Brian (1654) | Lost 1-2 | -171570 |
| 9modern | 144 | Meade, Nicholas (1692) | Won 2-1 | +201590 |
| 10modern | 31 | Yu, Jarvis (1992) | Lost 0-2 | -111579 |
| 11modern | 86 | Hoffmann, Matthew (1658) | Lost 0-2 | -161563 |
| 12modern | 130 | Czuboka, Paul (1581) | Won 2-0 | +181581 |
| 13modern | 112 | Krot, Hunter (1644) | Lost 0-2 | -171564 |
| average opponent: 1606record: 8-5 | new rating: 1564 | |||