| Tournament | Round | Wynne Davidson | Muriel Retford |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 5 | 372 | 305 |
| 17.10.2004 Rockingham (WA) | 1 | 329 | 302 |
| 05.02.2006 Fremantle (WA) | 2 | 321 | 331 |
| 21.05.2006 Melville (WA) | 7 | 339 | 350 |
| 19.11.2006 Coogee (WA) | 5 | 370 | 305 |
| 07.03.2007 Mandurah (WA) | 5 | 271 | 330 |
| 21.10.2007 Rockingham (WA) | 2 | 399 | 360 |
| 16.08.2009 ROCKINGHAM 2009 (WA) | 7 | 308 | 343 |
| 20.09.2009 YOKINE 2009 (WA) | 3 | 376 | 361 |
| Head-to-head after 9 games | 5 | 4 | |
| Average score | 342.77 | 331.88 | |
| Spread: | 98 | -98 | |