| Tournament | Round | Betty Ralph | Bertha Williams |
| 31.05.1998 Melville (WA) | 3 | 311 | 272 |
| 14.02.1999 Fremantle (WA) | 2 | 299 | 294 |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 5 | 325 | 335 |
| 08.07.2001 Bassendean (WA) | 6 | 317 | 318 |
| 12.08.2001 Yokine (WA) | 3 | 395 | 257 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 329.4 | 295.2 | |
| Spread: | 171 | -171 | |