| Tournament | Round | Wynne Davidson | Bettina Tonkin |
| 29.09.2002 Manjimup (WA) | 5 | 364 | 370 |
| 10.03.2002 Bunbury (WA) | 2 | 362 | 286 |
| 10.11.2002 Coogee (WA) | 1 | 411 | 367 |
| 02.02.2003 Fremantle (WA) | 2 | 443 | 331 |
| 23.02.2003 Kwinana (WA) | 4 | 344 | 363 |
| 31.05.2003 Western Australian Championships (WA) | 9 | 278 | 452 |
| 28.09.2003 Manjimup (WA) | 4 | 340 | 299 |
| 11.01.2004 January Maximin (WA) | 4 | 300 | 360 |
| 09.03.2008 Bunbury (WA) | 1 | 289 | 375 |
| 06.04.2008 MAXIMIN APRIL (WA) | 3 | 315 | 434 |
| 05.10.2008 SPRING MAXIMIN 2008 (WA) | 3 | 309 | 395 |
| Head-to-head after 11 games | 4 | 7 | |
| Average score | 341.36 | 366.54 | |
| Spread: | -277 | 277 | |