| Tournament | Round | Harry Malcolm | Cheah Siu Hean |
| 02.11.1999 Melbourne Cup Masters (VIC) | 3 | 411 | 372 |
| 01.04.2002 Australian Championships (WA) | 2 | 344 | 421 |
| 28.03.2005 Australian Championships (TAS) | 9 | 415 | 380 |
| 09.04.2007 Australian Championships (NSW) | 17 | 376 | 431 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 386.5 | 401 | |
| Spread: | -58 | 58 | |