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