| Tournament | Round | Bertha Williams | Dawn Peos |
| 25.04.1999 Nedlands (WA) | 1 | 275 | 320 |
| 03.10.1999 Yokine (WA) | 6 | 387 | 321 |
| 27.05.2001 Melville (WA) | 6 | 350 | 387 |
| 21.10.2001 Rockingham (WA) | 3 | 293 | 364 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 326.25 | 348 | |
| Spread: | -87 | 87 | |