| Date | Tournament | State | Round | Bettina Tonkin | Wynne Davidson |
|---|---|---|---|---|---|
| 29/09/2002 | Manjimup | WA | 5 | 370 | 364 |
| 10/03/2002 | Bunbury | WA | 2 | 286 | 362 |
| 10/11/2002 | Coogee | WA | 1 | 367 | 411 |
| 02/02/2003 | Fremantle | WA | 2 | 331 | 443 |
| 23/02/2003 | Kwinana | WA | 4 | 363 | 344 |
| 31/05/2003 | Western Australian Championships | WA | 9 | 452 | 278 |
| 28/09/2003 | Manjimup | WA | 4 | 299 | 340 |
| 11/01/2004 | January Maximin | WA | 4 | 360 | 300 |
| 09/03/2008 | Bunbury | WA | 1 | 375 | 289 |
| 06/04/2008 | MAXIMIN APRIL | WA | 3 | 434 | 315 |
| 05/10/2008 | SPRING MAXIMIN 2008 | WA | 3 | 395 | 309 |
| Head-to-head after 11 games | 7 | 4 | |||
| Average score | 366.55 | 341.36 | |||
| Spread | 277 | -277 | |||