| Tournament | Round | Isabel Van Hoorn | Gwen Chadwick |
| 30.08.1998 Knox (VIC) | 6 | 338 | 378 |
| 30.12.2000 Decathon (VIC) | 6 | 405 | 345 |
| 24.06.2001 Nunawading (VIC) | 3 | 369 | 361 |
| 22.06.2003 Nunawading (VIC) | 5 | 358 | 392 |
| 25.07.2004 Bentleigh (VIC) | 1 | 329 | 323 |
| 13.02.2005 Camberwell (VIC) | 5 | 328 | 365 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 354.5 | 360.66 | |
| Spread: | -37 | 37 | |