| Tournament | Round | Bettina Tonkin | Sandra Morgan |
| 12.07.1998 WA Masters (WA) | 17 | 279 | 314 |
| 13.08.2000 Western Australian Masters (WA) | 4 | 325 | 391 |
| 04.02.2001 Fremantle (WA) | 1 | 370 | 524 |
| 08.04.2001 Nedlands (WA) | 1 | 283 | 516 |
| Head-to-head after 4 games | 0 | 4 | |
| Average score | 314.25 | 436.25 | |
| Spread: | -488 | 488 | |