| Tournament | Round | Judy Hay | Betty Irwin |
| 21.05.2000 Ulladulla (NSW) | 2 | 401 | 341 |
| 23.11.2003 ACT Championships (ACT) | 3 | 370 | 336 |
| 23.02.2006 Ulladulla Summer Games Thursday (NSW) | 4 | 326 | 289 |
| 17.06.2006 Wollongong Marj Babb (NSW) | 4 | 360 | 318 |
| 20.05.2007 Ulladulla 2007 (NSW) | 8 | 387 | 320 |
| Head-to-head after 5 games | 5 | 0 | |
| Average score | 368.8 | 320.8 | |
| Spread: | 240 | -240 | |