| Tournament | Round | Isabel Van Hoorn | Doug Ristic |
| 29.12.2002 Decathon (VIC) | 8 | 373 | 324 |
| 28.08.2004 Winter's End (VIC) | 6 | 285 | 418 |
| 29.05.2005 Two Rack (VIC) | 6 | 385 | 349 |
| 02.04.2006 Langwarrin (VIC) | 1 | 326 | 295 |
| 10.03.2007 Raymond Island (VIC) | 3 | 384 | 427 |
| 10.03.2007 Raymond Island (VIC) | 12 | 381 | 336 |
| 20.01.2008 Aestival Festival (VIC) | 6 | 281 | 363 |
| 15.02.2009 Camberwell (VIC) | 6 | 298 | 399 |
| 25.07.2010 Nunawading Tournament (VIC) | 3 | 312 | 445 |
| Head-to-head after 9 games | 4 | 5 | |
| Average score | 336.11 | 372.88 | |
| Spread: | -331 | 331 | |