| Tournament | Round | Betty Irwin | Ann Fiddler |
| 21.05.1999 Ulladulla (NSW) | 2 | 334 | 380 |
| 05.06.1999 Wollongong Marj Babb (NSW) | 7 | 390 | 322 |
| 24.11.2002 ACT Championships (ACT) | 6 | 311 | 365 |
| 21.03.2004 Wyong (NSW) | 2 | 375 | 390 |
| 17.06.2005 Wollongong Marj Babb (NSW) | 4 | 333 | 376 |
| 11.02.2006 Wollongong (NSW) | 3 | 314 | 479 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 1 | 341 | 333 |
| Head-to-head after 7 games | 2 | 5 | |
| Average score | 342.57 | 377.85 | |