| Tournament | Round | Heather Sorensen | Joan Buchanan |
| 19.10.2002 Blacktown (NSW) | 5 | 359 | 403 |
| 06.09.2003 St George (NSW) | 3 | 309 | 357 |
| 22.05.2005 Ulladulla (NSW) | 3 | 328 | 300 |
| 17.06.2005 Wollongong Marj Babb (NSW) | 5 | 339 | 368 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 1 | 383 | 366 |
| 22.10.2006 ACT Championships (ACT) | 3 | 412 | 424 |
| 15.07.2007 Winter Challenge (NSW) | 13 | 350 | 330 |
| 15.11.2008 ACT Champs (ACT) | 7 | 280 | 386 |
| 03.01.2009 Janboree (NSW) | 4 | 374 | 339 |
| 14.11.2009 ACTChamps09 (ACT) | 8 | 323 | 455 |
| 13.03.2010 Bomaderry (NSW) | 6 | 312 | 417 |
| 04.07.2010 Winter Challenge (NSW) | 12 | 374 | 352 |
| Head-to-head after 12 games | 5 | 7 | |
| Average score | 345.25 | 374.75 | |
| Spread: | -354 | 354 | |