| Tournament | Round | Betty Irwin | Daphne Bezuidenhout |
| 13.02.1999 Wollongong (NSW) | 7 | 324 | 463 |
| 21.05.1999 Ulladulla (NSW) | 5 | 304 | 365 |
| 05.12.1999 ACT Christmas Capers (ACT) | 6 | 377 | 336 |
| 26.05.2002 Ulladulla (NSW) | 6 | 289 | 325 |
| 24.11.2002 ACT Championships (ACT) | 4 | 393 | 344 |
| 22.02.2003 Wollongong (NSW) | 2 | 261 | 401 |
| 19.02.2005 Wollongong (NSW) | 7 | 421 | 315 |
| 22.05.2005 Ulladulla (NSW) | 4 | 348 | 344 |
| 28.05.2006 Ulladulla Championship (NSW) | 9 | 400 | 318 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 6 | 317 | 398 |
| Head-to-head after 10 games | 5 | 5 | |
| Average score | 343.4 | 360.9 | |
| Spread: | -175 | 175 | |