| Tournament | Round | Isabel Van Hoorn | Gillian Renwick |
| 22.06.2003 Nunawading (VIC) | 1 | 282 | 435 |
| 10.12.2006 McKinnon 2006 (VIC) | 6 | 362 | 343 |
| 30.12.2007 DECATHON (VIC) | 5 | 426 | 326 |
| 25.07.2010 Nunawading Tournament (VIC) | 1 | 343 | 417 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 353.25 | 380.25 | |
| Spread: | -108 | 108 | |