Aitken, John
Current rating: 1425
Record: 2-7
| Grand Prix Atlanta 2018 (modern) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 246 | Wells, John W (1987) | Lost 1-2 | -91457 |
| 2modern | 361 | Glover, Nicolas (1495) | Lost 1-2 | -171440 |
| 3modern | 649 | Mullinax, Matthew (1404) | Won 2-1 | +171457 |
| 4modern | 638 | Pituk, Paul (1480) | Lost 1-2 | -181439 |
| 5modern | 656 | Bruno, David (1654) | Lost 0-2 | -141425 |
| average opponent: 1604record: 1-4 | new rating: 1425 | |||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 210 | Gilliam, Todd (1483) | Lost 0-2 | -181482 |
| 2modern | 739 | Crawford, Joshua (1463) | Won 2-1 | +171499 |
| 3modern | 585 | Mansoor, Mat M (1706) | Lost 1-2 | -141485 |
| 4modern | 858 | Hendrick, Nicholas (1445) | Lost 1-2 | -191466 |
| average opponent: 1524record: 1-3 | new rating: 1466 | |||