Ching, Yu Jun Jonathan
Current rating: 1505
Record: 4-4
| Grand Prix Singapore 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 12 | Yu, Mingyi (1500) | Won 2-1 | +181518 |
| 2extended | 14 | Hiu, Choon Pien (1405) | Won 2-0 | +161534 |
| 3extended | 11 | Ng, Soon Lye (1590) | Lost 0-2 | -171517 |
| 4extended | 101 | Gan, Vincent (1691) | Lost 0-2 | -151502 |
| 5extended | 139 | Seow, Chuan Jie (1501) | Won 2-1 | +181520 |
| 6extended | 70 | Yeo, Lee Chye (1411) | Won 2-0 | +161536 |
| 7extended | 79 | Ibamoto, Masami (1819) | Lost 1-2 | -131523 |
| 8extended | 84 | Ong, Desmond Wei Liang (1521) | Lost 0-2 | -181505 |
| average opponent: 1555record: 4-4 | new rating: 1505 | |||