| Tournament | Round | Isabel Van Hoorn | Diane Stoyan |
| 22.06.2003 Nunawading (VIC) | 6 | 248 | 520 |
| 28.12.2003 Decathon (VIC) | 3 | 499 | 314 |
| 29.12.2004 Decathon (VIC) | 8 | 437 | 380 |
| 29.05.2005 Two Rack (VIC) | 1 | 384 | 383 |
| 10.12.2006 McKinnon 2006 (VIC) | 5 | 356 | 332 |
| 28.12.2006 Decathon (VIC) | 10 | 414 | 359 |
| 30.12.2007 DECATHON (VIC) | 4 | 328 | 344 |
| 20.01.2008 Aestival Festival (VIC) | 5 | 381 | 366 |
| 18.01.2009 Aestival (VIC) | 6 | 376 | 380 |
| 17.01.2010 AESTIVAL FESTIVAL (VIC) | 5 | 399 | 280 |
| 23.01.2011 Aestival Festival (VIC) | 7 | 358 | 393 |
| Head-to-head after 11 games | 7 | 4 | |
| Average score | 380 | 368.27 | |
| Spread: | 129 | -129 | |