| Tournament | Round | Vicki Underhill | Sharon Sorensen |
| 07.06.2003 Woy Woy (NSW) | 5 | 301 | 429 |
| 03.06.2006 Woy Woy (NSW) | 7 | 354 | 281 |
| 09.04.2007 Australian Championships (NSW) | 9 | 413 | 305 |
| 09.04.2007 Australian Championships (NSW) | 14 | 348 | 450 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 354 | 366.25 | |
| Spread: | -49 | 49 | |