Koh, Matthew Hong En
Current rating: 1531
Record: 4-3
| Grand Prix Singapore 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 40 | Lim, Ming Han Sidney Reuben (1517) | Won 2-0 | +181518 |
| 3extended | 38 | Pong, Robin Hee Tee (1542) | Won 2-0 | +191537 |
| 4extended | 33 | Su, Michael (1556) | Won 2-1 | +181555 |
| 5extended | 15 | Ishida, Itaru (1770) | Lost 1-2 | -141541 |
| 6extended | 31 | Yau, Mun Yip (1556) | Lost 1-2 | -181523 |
| 7extended | 48 | Gwee, Hong Kiat Kenneth (1538) | Won 2-1 | +181541 |
| 8extended | 44 | Morita, Masahiko (1964) | Lost 1-2 | -101531 |
| average opponent: 1635record: 4-3 | new rating: 1531 | |||