| Tournament | Round | Dawn Thomas | Isabel Van Hoorn |
| 22.08.1999 Bentleigh (VIC) | 6 | 353 | 381 |
| 20.01.2002 Aestival (VIC) | 6 | 452 | 297 |
| 24.03.2002 Langwarrin (VIC) | 5 | 384 | 405 |
| 09.02.2003 Camberwell (VIC) | 6 | 420 | 412 |
| 30.03.2003 Langwarrin (VIC) | 3 | 500 | 400 |
| 14.06.2004 Victorian Championships (VIC) | 2 | 326 | 312 |
| 29.12.2004 Decathon (VIC) | 6 | 387 | 382 |
| 28.12.2005 Decathon (VIC) | 5 | 376 | 384 |
| Head-to-head after 8 games | 5 | 3 | |
| Average score | 399.75 | 371.62 | |
| Spread: | 225 | -225 | |