| Date | Tournament | State | 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 | 314.86 | 398.57 | |||
| Spread | -586 | 586 | |||