| Tournament | Round | Bettina Tonkin | Shirley Allen |
| 26.04.1998 Nedlands (WA) | 3 | 458 | 321 |
| 30.08.1998 Yokine (WA) | 3 | 329 | 326 |
| 17.01.1999 WA Open (WA) | 6 | 372 | 327 |
| 14.03.1999 Bunbury (WA) | 6 | 329 | 399 |
| 13.08.2000 Western Australian Masters (WA) | 15 | 373 | 348 |
| 10.09.2000 Yokine (WA) | 6 | 405 | 326 |
| 21.10.2001 Rockingham (WA) | 1 | 319 | 369 |
| 20.10.2002 Rockingham (WA) | 6 | 463 | 333 |
| 06.04.2003 Nedlands (WA) | 4 | 444 | 322 |
| 31.05.2003 Western Australian Championships (WA) | 1 | 435 | 342 |
| Head-to-head after 10 games | 8 | 2 | |
| Average score | 392.7 | 341.3 | |
| Spread: | 514 | -514 | |