| Tournament | Round | Betty Irwin | Brenda Sloane |
| 16.05.2009 Ulladulla (NSW) | 11 | 366 | 323 |
| 31.10.2009 Nowra 2009 (NSW) | 4 | 244 | 373 |
| 06.11.2010 Nowra (NSW) | 5 | 327 | 393 |
| 15.05.2011 Ulladulla (NSW) | 2 | 390 | 342 |
| 20.05.2012 Ulladulla (NSW) | 11 | 317 | 353 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 328.8 | 356.8 | |
| Spread: | -140 | 140 | |