| Tournament | Round | Isabel Van Hoorn | Harry Malcolm |
| 15.11.1998 Geelong (VIC) | 6 | 365 | 348 |
| 22.08.1999 Bentleigh (VIC) | 4 | 389 | 399 |
| 20.05.2001 Dandenong (VIC) | 2 | 445 | 431 |
| 29.12.2001 Decathon (VIC) | 3 | 283 | 492 |
| 23.06.2002 Nunawading (VIC) | 1 | 325 | 373 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 361.4 | 408.6 | |
| Spread: | -236 | 236 | |