| Tournament | Round | Maree Heynen | Betty Irwin |
| 11.09.2005 Hills Open (NSW) | 6 | 298 | 313 |
| 28.05.2006 Ulladulla Championship (NSW) | 14 | 294 | 419 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 7 | 301 | 411 |
| 14.06.2008 Wollongong (NSW) | 1 | 333 | 268 |
| 31.10.2009 Nowra 2009 (NSW) | 13 | 344 | 401 |
| 31.10.2009 Nowra 2009 (NSW) | 14 | 291 | 422 |
| 15.05.2011 Ulladulla (NSW) | 9 | 340 | 293 |
| 15.05.2011 Ulladulla (NSW) | 13 | 307 | 499 |
| Head-to-head after 8 games | 2 | 6 | |
| Average score | 313.5 | 378.25 | |
| Spread: | -518 | 518 | |