| Date | Tournament | State | Round | Wynne Davidson | Marge Roberts |
|---|---|---|---|---|---|
| 13/02/2000 | Fremantle | WA | 4 | 426 | 344 |
| 10/06/2001 | Advanced Intermediate Recreation | WA | 5 | 331 | 346 |
| 03/10/2004 | Manjimup | WA | 6 | 370 | 320 |
| 06/06/2005 | Western Australian Championships | WA | 8 | 278 | 419 |
| 06/06/2005 | Western Australian Championships | WA | 16 | 335 | 355 |
| 04/06/2006 | Western Australian Championships | WA | 7 | 313 | 375 |
| 01/10/2006 | Manjimup | WA | 3 | 351 | 379 |
| 04/06/2007 | Western Australian Championships C & D | WA | 3 | 389 | 287 |
| 29/09/2007 | Pinjarra Maximin | WA | 3 | 284 | 383 |
| Head-to-head after 9 games | 3 | 6 | |||
| Average score | 341.89 | 356.44 | |||
| Spread | -131 | 131 | |||