| Tournament | Round | Betty Irwin | Merle Young |
| 20.06.1998 Wollongong Marj Babb (NSW) | 3 | 313 | 463 |
| 13.02.1999 Wollongong (NSW) | 4 | 321 | 409 |
| 17.06.2000 Wollongong Marj Babb (NSW) | 7 | 397 | 255 |
| 23.02.2002 Wollongong (NSW) | 4 | 316 | 340 |
| 26.05.2002 Ulladulla (NSW) | 5 | 397 | 342 |
| 22.02.2003 Wollongong (NSW) | 6 | 314 | 361 |
| 15.05.2003 Ulladulla (NSW) | 6 | 374 | 322 |
| Head-to-head after 7 games | 3 | 4 | |
| Average score | 347.42 | 356 | |
| Spread: | -60 | 60 | |