Aitchison, Christopher
Current rating: 1550
Record: 23-20-3
| Grand Prix Melbourne 2005 (extended) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 21 | Lo, Dominic (1573) | Won 2-1 | +191544 |
| 5extended | 7 | Han, Liwei (1518) | Won 2-0 | +181562 |
| 6extended | 2 | Tung, Nick (1534) | Lost 0-2 | -191543 |
| 7extended | 10 | Hortle, Linden (1575) | Won 2-1 | +191562 |
| 8extended | 4 | Dunne, Matthew (1591) | Lost 1-2 | -181544 |
| 9extended | 10 | Sherwood, John (1571) | Lost 1-2 | -171527 |
| 10extended | 12 | Cheung, Justin (1548) | Lost 0-2 | -181509 |
| 11extended | 22 | Nadebaum, Rob (1656) | Draw 1-1 | +31512 |
| 12extended | 19 | Hay, Tom (1714) | Won 2-0 | +221534 |
| 13extended | 15 | Pepper, Patrick (1466) | Won 2-1 | +161550 |
| top | average opponent: 1575record: 5-4-1 | new rating: 1550 | ||
| Grand Prix Brisbane 2004 (COK limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 6 | Hood, Eric (1536) | Won 2-0 | +181546 |
| 4sealed | 3 | Hunstad, Scott (1431) | Lost 0-2 | -201526 |
| 5sealed | 32 | Hill, Corey (1566) | Won 2-0 | +181544 |
| 6sealed | 38 | Lake, Garth (1504) | Draw 1-1 | 01544 |
| 7sealed | 28 | Cornford, David (1537) | Won 2-0 | +181562 |
| 8rochester | 31 | Kwan, Chris (1654) | Lost 0-2 | -171545 |
| 9rochester | 9 | Yip, Winston (1488) | Lost 0-2 | -191526 |
| 10rochester | 2 | Restel, Sven (1435) | Won 2-1 | +161542 |
| 11rochester | 4 | Lake, Garth (1507) | Won 2-0 | +181560 |
| 12rochester | 30 | Miller, Roger (1591) | Lost 1-2 | -181542 |
| 13rochester | 15 | Johnston, Richard [AUS] (1601) | Lost 0-2 | -171525 |
| top | average opponent: 1532record: 5-5-1 | new rating: 1525 | ||
| Grand Prix Sydney 2003 (MRD limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 30 | Tay, Andrew (1591) | Won 2-0 | +191571 |
| 4sealed | 19 | Smith, Scott [AUS] (1505) | Lost 0-2 | -201551 |
| 5sealed | 46 | Brugman, John (1565) | Won 2-0 | +191570 |
| 6sealed | 32 | Fabian, Mark (1549) | Won 2-0 | +171587 |
| 7sealed | 27 | Stratford, Dion (1563) | Lost 0-2 | -181569 |
| 8sealed | 37 | Xia, Michael (1553) | Won 2-0 | +181587 |
| 9rochester | 30 | Karp, Hugh (1508) | Lost 1-2 | -201567 |
| 10rochester | 1 | Salonen, Miki (1468) | Lost 1-2 | -201547 |
| 11rochester | 24 | Wilson, James [AUS] (1517) | Won 2-0 | +181565 |
| 12rochester | 27 | Dao, Michael (1497) | Lost 0-2 | -191546 |
| 13rochester | 8 | Petersen, Colin [AUS] (1534) | Draw 1-1 | -11545 |
| 14rochester | 10 | Williams, Christopher [AUS] (1560) | Lost 0-2 | -171528 |
| top | average opponent: 1534record: 5-6-1 | new rating: 1528 | ||
| Grand Prix Melbourne 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Light, Jens (1434) | Won 2-0 | +171517 |
| 2sealed | 23 | Hodges, Marcus (1586) | Won 2-0 | +191536 |
| 3sealed | 9 | Brebach, Kim (1566) | Won 2-0 | +191555 |
| 4sealed | 33 | Corney, Andrew (1558) | Lost 0-2 | -181537 |
| 5sealed | 27 | West, Justin T (1559) | Won 2-1 | +181555 |
| 6sealed | 28 | Tay, Andrew (1534) | Won 2-0 | +181573 |
| 7sealed | 9 | He, Timothy L (1523) | Lost 1-2 | -191554 |
| 8rochester | 32 | Stratford, Dion (1502) | Lost 1-2 | -191535 |
| 9rochester | 20 | Brumby, Gene (1493) | Won 2-1 | +171552 |
| 10rochester | 23 | Rosati, Dante (1552) | Won 2-0 | +181570 |
| 11rochester | 22 | Edwards, David [AUS] (1552) | Lost 0-2 | -181552 |
| 12rochester | 20 | Berger, Ernie (1556) | Won 2-0 | +181570 |
| 13rochester | 27 | Soo, Mun Keong (1575) | Lost 1-2 | -181552 |
| top | average opponent: 1538record: 8-5 | new rating: 1552 | ||