Purdey, Sean
Current rating: 1466
| Grand Prix Brisbane 2013 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 21 | Bassett, Timothy (1483) | Lost 0-2 | -181466 |
| 2modern | 135 | Gerlev Hansen, Anders (1486) | Lost 1-2 | -171449 |
| 3modern | 202 | Harris, Dale Robert (1464) | Won 2-0 | +181467 |
| 4modern | 201 | Chen, Cameron (1433) | Won 2-0 | +171484 |
| 5modern | 127 | Hill, Corey (1495) | Draw 1-1 | +11485 |
| 6modern | 132 | Poon, Jin Kiat (1469) | Lost 1-2 | -191466 |
| top | average opponent: 1472record: 2-3-1 | new rating: 1466 | ||
| Grand Prix Melbourne 2012 (DKA limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 56 | Zhao, Geoff (1500) | Lost 0-2 | -171464 |
| 2sealed | 197 | Meihuizen, Sam (1482) | Won 2-1 | +181482 |
| 3sealed | 139 | Graham, Aaron [AUS] (1537) | Won 2-0 | +191501 |
| 4sealed | 96 | Lendrum, Luke (1502) | Won 2-1 | +181519 |
| 5sealed | 114 | Cunnington, Benjamin (1556) | Lost 1-2 | -171502 |
| 6sealed | 137 | Cutting, Shane (1521) | Lost 0-2 | -181484 |
| 7sealed | 135 | Egwunye, Jacob (1505) | Won 2-0 | +181502 |
| 8sealed | 114 | Plinston, Andrew (1507) | Lost 0-2 | -181484 |
| top | average opponent: 1514record: 4-4 | new rating: 1484 | ||
| Grand Prix Brisbane 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | moloney, christopher (1456) | Lost 1-2 | -191481 |
| 2sealed | 65 | Ward, Chad (1483) | Won 2-0 | +181499 |
| 3sealed | 78 | Solomon, David (1501) | Lost 0-2 | -181481 |
| top | average opponent: 1480record: 1-2 | new rating: 1481 | ||