Jefferson, Allan
Current rating: 1488
Record: 2-3
| Grand Prix Melbourne 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 145 | McFadyen, Callum (1501) | Won 2-0 | +181518 |
| 2sealed | 169 | Hughes, Brett (1726) | Lost 0-2 | -141504 |
| 3sealed | 282 | Gardiner, Zachary (1548) | Lost 0-2 | -171487 |
| 4sealed | 273 | Sewell, David (1464) | Won 2-1 | +171504 |
| 5sealed | 236 | Benz, Alex (1595) | Lost 0-2 | -161488 |
| average opponent: 1567record: 2-3 | new rating: 1488 | |||