Koh, Chong Yew Edwin
Current rating: 1521
Record: 8-7-1
| Grand Prix Singapore 2009 (extended) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Koh, Zhi Sin (1482) | Won 2-0 | +171550 |
| 2extended | 15 | shi, jianping (1520) | Won 2-1 | +181568 |
| 3extended | 46 | Soh, Terry (1758) | Won 2-1 | +211589 |
| 4extended | 26 | Ootsuka, Koutarou (2032) | Lost 0-2 | -101579 |
| 5extended | 65 | Ordonez, Arrian Ferric (1491) | Lost 1-2 | -201559 |
| 6extended | 69 | Chen, Tze Kang (1513) | Draw 1-1 | -11558 |
| 7extended | 91 | Lu, Alex (1524) | Lost 1-2 | -181540 |
| 8extended | 98 | Ong, Yueh Shiuan Jason (1502) | Lost 1-2 | -191521 |
| average opponent: 1603record: 3-4-1 | new rating: 1521 | |||
| Grand Prix Singapore 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 14 | Chong, Fong Kai (1500) | Lost 0-2 | -181482 |
| 2extended | 132 | Ng, Benson (1427) | Lost 0-2 | -191463 |
| 3extended | 139 | Ooi, Wei Jie Andrew (1464) | Won 2-0 | +181481 |
| 4extended | 133 | Zhang, Tian Hao (1481) | Lost 1-2 | -181463 |
| 5extended | 153 | Rangsan, Janrangsee (1461) | Won 2-1 | +181481 |
| 6extended | 146 | Chan, Boon Hao (1488) | Won 2-0 | +181499 |
| 7extended | 116 | Hiu, Choon Pien (1398) | Won 2-1 | +161515 |
| 8extended | 77 | Ng, Jun Yuan (1501) | Won 1-0 | +181533 |
| average opponent: 1465record: 5-3 | new rating: 1533 | |||