| Tournament | Round | Isabel Van Hoorn | Doreen Ivanovski |
| 16.05.1998 Dandenong (VIC) | 3 | 345 | 325 |
| 30.08.1998 Knox (VIC) | 3 | 422 | 351 |
| 25.10.1998 Frankston (VIC) | 5 | 440 | 376 |
| 26.09.1999 Essendon (VIC) | 2 | 356 | 415 |
| 21.05.2000 Dandenong (VIC) | 3 | 368 | 480 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 386.2 | 389.4 | |
| Spread: | -16 | 16 | |