Birkett, Philip
Current rating: 1468
Record: 4-6
| Grand Prix London 2013 (GTC limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 420 | Cowderoy, Paul (1505) | Lost 1-2 | -181465 |
| 2sealed | 669 | McDonald, Marianne (1482) | Won 2-1 | +191484 |
| 3sealed | 706 | Tomelitsch, Patrick (1588) | Lost 1-2 | -161468 |
| 4sealed | 819 | Pulin, Romuald (1466) | Won 2-1 | +181486 |
| 5sealed | 621 | McDonald, James [ENG] (1499) | Lost 0-2 | -181468 |
| average opponent: 1508record: 2-3 | new rating: 1468 | |||
| Grand Prix Melbourne 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 124 | Morrissey, Jim (1500) | Won 2-1 | +181518 |
| 2sealed | 98 | Gordon, Andrew D (1737) | Lost 0-2 | -141504 |
| 3sealed | 82 | Mann, Simeon (1491) | Won 2-0 | +181522 |
| 4sealed | 60 | Messel, Nicolas (1376) | Lost 0-2 | -211501 |
| 5sealed | 118 | Walker, Sam (1501) | Lost 1-2 | -181483 |
| average opponent: 1521record: 2-3 | new rating: 1483 | |||