Tjoa, Djony
Current rating: 1480
Record: 3-4-1
| Grand Prix Melbourne 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Williams, Michael [AUS] (1500) | Won 2-1 | +181518 |
| 2sealed | 70 | Connelly-Hansen, Allan (1400) | Draw 1-1 | -21516 |
| 3sealed | 61 | Davey, Bruce (1490) | Lost 0-2 | -191497 |
| 4sealed | 131 | Webb, Pete (1500) | Lost 1-2 | -181479 |
| 5sealed | 154 | Pepper, Ross (1482) | Won 2-0 | +181497 |
| 6sealed | 123 | Christie, Susan (1497) | Lost 1-2 | -181479 |
| 7sealed | 112 | Zhang, Sam (1465) | Won 2-0 | +181497 |
| 8sealed | 88 | Hutchison, Raka (1516) | Lost 1-2 | -171480 |
| average opponent: 1481record: 3-4-1 | new rating: 1480 | |||