Ong, Toon Hoe Clarence
Current rating: 1484
Record: 5-6-1
| Grand Prix Singapore 2015 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 355 | Chmielewski, Nicholas (1519) | Lost 0-2 | -171447 |
| 2modern | 409 | Villaverde, Herlbert (1407) | Lost 0-1 | -191428 |
| 3modern | 536 | Lam, Kin Whye (1409) | Won 2-1 | +181446 |
| 4modern | 395 | Nazri, Mohammad (1484) | Draw 1-1 | +11447 |
| 5modern | 430 | Soesanto, Michael (1484) | Won 2-0 | +181465 |
| 6modern | 333 | Jia Jun Nicholas, (1498) | Won 2-0 | +191484 |
| average opponent: 1467record: 3-2-1 | new rating: 1484 | |||
| Grand Prix Singapore 2013 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 173 | Tan, Xing Jian (1500) | Won 2-0 | +181518 |
| 2sealed | 131 | Matias, Jo-Dale G (1591) | Won 2-0 | +191537 |
| 3sealed | 23 | Harrington, Chris (1540) | Lost 1-2 | -181519 |
| 4sealed | 127 | Yeo, Johnson (1452) | Lost 1-2 | -191500 |
| 5sealed | 249 | Whittaker, Stephen (1505) | Lost 0-2 | -181482 |
| 6sealed | 291 | Bautista, Allan (1483) | Lost 1-2 | -181464 |
| average opponent: 1512record: 2-4 | new rating: 1464 | |||