Ong, Marcus Wen Hao
Current rating: 1446
Record: 2-5
| Grand Prix Singapore 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 7 | Lee, Chee Kheong Alvin (1500) | Won 2-1 | +181518 |
| 2block | 37 | Chean, Cheah Bing (1519) | Lost 0-2 | -181500 |
| 3block | 51 | Kwan, Jarrod Tuck Fatt (1481) | Lost 0-2 | -181482 |
| 4block | 119 | LIM, MENG FEI (1482) | Lost 0-2 | -181464 |
| 5block | 113 | Khoo, Boon Wee (1464) | Won 2-1 | +181482 |
| 6block | 91 | Ong, Chong Guan Nicholas (1481) | Lost 1-2 | -181464 |
| 7block | 102 | Pang, MiaoShen (1465) | Lost 1-2 | -181446 |
| average opponent: 1485record: 2-5 | new rating: 1446 | |||