Cheok, Joey
Current rating: 1532
Record: 5-3
| Grand Prix Melbourne 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 134 | Allen, Tarragon (1500) | Won 2-1 | +181518 |
| 2sealed | 36 | Goodall, Matthew (1576) | Won 2-0 | +191537 |
| 3sealed | 43 | Iswara, Gerald (1537) | Lost 0-2 | -181519 |
| 4sealed | 87 | Cheong, Weng Sun (1517) | Lost 1-2 | -181501 |
| 5sealed | 103 | Gemme, Matthew T (1482) | Won 2-1 | +181519 |
| 6sealed | 120 | Demler, Matthew (1519) | Won 2-1 | +181537 |
| 7sealed | 80 | Gurney, Traci (1369) | Won 2-1 | +151552 |
| 8sealed | 47 | Tso, Ken (1473) | Lost 1-2 | -201532 |
| average opponent: 1497record: 5-3 | new rating: 1532 | |||