| Tournament | Round | Lois Usher | Ruth Probert |
| 16.06.2002 Advanced Intermediate Recreation (WA) | 2 | 263 | 328 |
| 23.02.2003 Kwinana (WA) | 2 | 342 | 293 |
| 06.04.2003 Nedlands (WA) | 3 | 338 | 345 |
| 25.05.2003 Melville (WA) | 3 | 313 | 276 |
| 30.05.2004 Melville (WA) | 5 | 351 | 295 |
| 01.04.2007 Nedlands (WA) | 6 | 284 | 330 |
| 03.02.2008 Fremantle (WA) | 6 | 362 | 282 |
| Head-to-head after 7 games | 4 | 3 | |
| Average score | 321.85 | 307 | |
| Spread: | 104 | -104 | |