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