| Tournament | Round | Vicki Underhill | Natalie Tadday |
| 02.10.2006 New South Wales Championships (NSW) | 4 | 365 | 292 |
| 09.04.2007 Australian Championships (NSW) | 8 | 384 | 325 |
| 09.04.2007 Australian Championships (NSW) | 24 | 327 | 396 |
| 05.07.2009 Winter Challenge (NSW) | 8 | 318 | 409 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 348.5 | 355.5 | |
| Spread: | -28 | 28 | |