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