Lafferty, Michael
Current rating: 1523
Record: 4-3
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 283 | Connelly, Andrew (1595) | Lost 0-2 | -161484 |
| 2modern | 455 | Diesenreiter, Simon (1622) | Lost 1-2 | -161468 |
| 3modern | 785 | Ballance, David (1463) | Won 2-0 | +181486 |
| 4modern | 771 | Hooton, Patrick (1613) | Lost 0-2 | -161470 |
| 5modern | 725 | Hopper, Ethan (1420) | Won 2-1 | +181488 |
| 6modern | 620 | Eggers, Devon (1485) | Won 2-1 | +171505 |
| 7modern | 433 | Sedano, Edwin (1452) | Won 2-0 | +181523 |
| average opponent: 1521record: 4-3 | new rating: 1523 | |||