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