| Tournament | Round | Wynne Davidson | Jenny Coetzee |
| 02.08.1998 Bassendean (WA) | 2 | 336 | 329 |
| 28.05.2000 Melville (WA) | 4 | 372 | 260 |
| 25.06.2000 Advanced Intermediate Recreation (WA) | 2 | 303 | 339 |
| 04.02.2001 Fremantle (WA) | 1 | 299 | 358 |
| 11.11.2001 Coogee (WA) | 5 | 305 | 330 |
| 29.09.2002 Manjimup (WA) | 6 | 281 | 441 |
| 20.10.2002 Rockingham (WA) | 6 | 339 | 337 |
| 31.05.2003 Western Australian Championships (WA) | 13 | 341 | 353 |
| 11.01.2004 January Maximin (WA) | 1 | 394 | 330 |
| 06.04.2008 MAXIMIN APRIL (WA) | 4 | 337 | 343 |
| 09.11.2008 COOGEE 2008 (WA) | 3 | 302 | 359 |
| Head-to-head after 11 games | 4 | 7 | |
| Average score | 328.09 | 343.54 | |
| Spread: | -170 | 170 | |