| Tournament | Round | Bertha Williams | Lola Dunstan |
| 17.10.1999 Rockingham (WA) | 4 | 334 | 347 |
| 08.07.2001 Bassendean (WA) | 4 | 345 | 346 |
| 12.08.2001 Yokine (WA) | 4 | 354 | 328 |
| 14.07.2002 Bassendean (WA) | 4 | 347 | 318 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 345 | 334.75 | |
| Spread: | 41 | -41 | |