| Tournament | Round | Isabel Van Hoorn | Nan Smith |
| 07.03.1999 Bendigo (VIC) | 3 | 402 | 364 |
| 17.04.1999 Knox-Gully (VIC) | 4 | 366 | 448 |
| 21.05.2000 Dandenong (VIC) | 6 | 330 | 382 |
| 29.10.2000 Teams Event (VIC) | 1 | 378 | 364 |
| 29.12.2001 Decathon (VIC) | 4 | 389 | 321 |
| 01.12.2002 McKinnon (VIC) | 3 | 314 | 343 |
| 19.01.2003 Bil Rose Aestival (VIC) | 5 | 330 | 328 |
| 28.12.2003 Decathon (VIC) | 10 | 400 | 406 |
| 28.08.2004 Winter's End (VIC) | 3 | 362 | 337 |
| 20.08.2005 Bentleigh (VIC) | 2 | 393 | 417 |
| 11.09.2005 World Scrabble Championships Fundraiser (VIC) | 2 | 302 | 408 |
| 28.12.2005 Decathon (VIC) | 3 | 413 | 389 |
| 07.01.2006 Mind Sports (VIC) | 3 | 352 | 420 |
| 02.04.2006 Langwarrin (VIC) | 3 | 349 | 409 |
| 10.03.2007 Raymond Island (VIC) | 8 | 357 | 308 |
| 30.12.2007 DECATHON (VIC) | 3 | 301 | 376 |
| 20.01.2008 Aestival Festival (VIC) | 2 | 361 | 418 |
| 28.09.2008 Essendon (VIC) | 5 | 399 | 292 |
| 30.11.2008 Bentleigh (VIC) | 6 | 404 | 390 |
| Head-to-head after 19 games | 9 | 10 | |
| Average score | 363.26 | 374.73 | |
| Spread: | -218 | 218 | |