Aitchison, Mark
Current rating: 1446
Record: 1-4
| Grand Prix Kansas City 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 209 | Baker, Aaron (1500) | Lost 0-2 | -181482 |
| 2modern | 362 | Hubbard, Joseph (1475) | Lost 0-2 | -181464 |
| 3modern | 363 | Foster, Calvin (1431) | Won 2-0 | +171481 |
| 4modern | 358 | Lee, David (1605) | Lost 1-2 | -151466 |
| 5modern | 401 | Modica, Mike (1396) | Lost 1-2 | -201446 |
| average opponent: 1481record: 1-4 | new rating: 1446 | |||