| Tournament | Round | Sandra Crompton | Bettina Tonkin |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 2 | 362 | 306 |
| 19.09.1999 Spring Subiaco (WA) | 1 | 339 | 356 |
| 13.08.2000 Western Australian Masters (WA) | 3 | 326 | 387 |
| 11.01.2004 January Maximin (WA) | 2 | 271 | 400 |
| 18.05.2014 MELVILLE (WA) | 2 | 298 | 424 |
| 07.12.2014 Dec OPEN (WA) | 2 | 326 | 407 |
| Head-to-head after 6 games | 1 | 5 | |
| Average score | 320.33 | 380 | |
| Spread: | -358 | 358 | |