| Tournament | Round | Isabel Van Hoorn | John Parker |
| 16.05.1998 Dandenong (VIC) | 5 | 410 | 335 |
| 07.03.1999 Bendigo (VIC) | 1 | 301 | 313 |
| 05.12.1999 McKinnon (VIC) | 4 | 392 | 411 |
| 05.08.2001 Knox (VIC) | 4 | 379 | 347 |
| 24.06.2001 Nunawading (VIC) | 4 | 305 | 372 |
| 29.09.2002 Essendon (VIC) | 4 | 406 | 336 |
| 01.12.2002 McKinnon (VIC) | 4 | 384 | 319 |
| 19.01.2003 Bil Rose Aestival (VIC) | 3 | 343 | 344 |
| 09.02.2003 Camberwell (VIC) | 2 | 377 | 337 |
| 22.06.2003 Nunawading (VIC) | 4 | 359 | 366 |
| 28.12.2003 Decathon (VIC) | 5 | 329 | 479 |
| 14.06.2004 Victorian Championships (VIC) | 1 | 393 | 391 |
| 12.06.2006 vic06 ONE DAY (VIC) | 4 | 286 | 409 |
| 02.07.2006 Bentleigh (VIC) | 1 | 344 | 361 |
| 10.03.2007 Raymond Island (VIC) | 10 | 343 | 394 |
| 28.09.2008 Essendon (VIC) | 4 | 312 | 444 |
| 15.02.2009 Camberwell (VIC) | 5 | 308 | 374 |
| 18.04.2010 2010 WYSCFR1 (VIC) | 2 | 394 | 340 |
| 23.05.2010 cranbourne (VIC) | 6 | 407 | 378 |
| Head-to-head after 19 games | 8 | 11 | |
| Average score | 356.42 | 371.05 | |
| Spread: | -278 | 278 | |