| Tournament | Round | Vicki Underhill | Erica Williams |
| 21.08.2005 Queensland Championships (QLD) | 12 | 346 | 430 |
| 17.04.2006 Australian Championships (QLD) | 11 | 361 | 459 |
| 17.04.2006 Australian Championships (QLD) | 15 | 375 | 378 |
| 23.02.2008 Early Warm-Up (QLD) | 3 | 421 | 318 |
| 26.07.2009 Ocean Shores (NSW) | 4 | 432 | 351 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 387 | 387.2 | |
| Spread: | -1 | 1 | |