Guilfoyle, Ezekiel j
Current rating: 1469
Record: 4-6
| Grand Prix Brisbane 2011 (ISD standard) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 23 | Encel, Benjamin (1504) | Lost 1-2 | -191487 |
| 2standard | 124 | Chih, Chris (1482) | Lost 1-2 | -181469 |
| 3standard | 158 | Dore, Andrew (1463) | Won 2-1 | +181487 |
| 4standard | 125 | Ennis, Bart (1481) | Lost 0-0 | -181469 |
| average opponent: 1482record: 1-3 | new rating: 1469 | |||
| Grand Prix Sydney 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 87 | Canty-Seghers, Nathan (1500) | Won 2-0 | +181518 |
| 2sealed | 88 | Oks, Oliver (1899) | Lost 0-2 | -111507 |
| 3sealed | 76 | Dong, Jack (1500) | Lost 0-2 | -181489 |
| 4sealed | 144 | Wong, Raymond (1482) | Won 2-0 | +171506 |
| 5sealed | 128 | Rankin, Jason (1465) | Won 2-0 | +181524 |
| 6sealed | 119 | Tregoning, Andrew J (1516) | Lost 0-2 | -181506 |
| average opponent: 1560record: 3-3 | new rating: 1506 | |||