| Tournament | Round | Harry Malcolm | Derek McKenzie |
| 08.06.1998 Victorian Championships (VIC) | 9 | 363 | 388 |
| 05.07.1998 High Country (VIC) | 3 | 257 | 406 |
| 01.08.1999 Winter Masters (NSW) | 16 | 399 | 321 |
| 04.10.1999 New South Wales Championships (NSW) | 16 | 260 | 369 |
| 22.04.2000 Australian Championships (QLD) | 10 | 438 | 323 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 343.4 | 361.4 | |
| Spread: | -90 | 90 | |