| Tournament | Round | Betty Irwin | Margaret Andrews |
| 13.02.1999 Wollongong (NSW) | 2 | 321 | 285 |
| 21.05.1999 Ulladulla (NSW) | 1 | 286 | 406 |
| 21.02.2004 Wollongong (NSW) | 4 | 307 | 422 |
| 21.03.2004 Wyong (NSW) | 1 | 287 | 430 |
| 28.05.2006 Ulladulla Championship (NSW) | 4 | 308 | 418 |
| 16.02.2008 Wollongong WORDS Round Robin (NSW) | 5 | 349 | 449 |
| 18.05.2008 Ulladulla (NSW) | 8 | 346 | 380 |
| Head-to-head after 7 games | 1 | 6 | |
| Average score | 314.85 | 398.57 | |
| Spread: | -586 | 586 | |