| Tournament | Round | Bettina Tonkin | Kath Bermingham |
| 15.02.1998 Fremantle (WA) | 1 | 325 | 393 |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 3 | 382 | 352 |
| 08.08.1999 Bassendean (WA) | 5 | 366 | 242 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 357.66 | 329 | |
| Spread: | 86 | -86 | |