| Tournament | Round | Bertha Williams | Muriel Retford |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 2 | 295 | 315 |
| 27.03.2000 Nedlands (WA) | 5 | 274 | 330 |
| 28.05.2000 Melville (WA) | 1 | 291 | 306 |
| 08.04.2001 Nedlands (WA) | 5 | 288 | 210 |
| 27.05.2001 Melville (WA) | 2 | 301 | 315 |
| 08.07.2001 Bassendean (WA) | 5 | 317 | 357 |
| 11.11.2001 Coogee (WA) | 5 | 321 | 363 |
| Head-to-head after 7 games | 1 | 6 | |
| Average score | 298.14 | 313.71 | |
| Spread: | -109 | 109 | |