| Tournament | Round | Grace de Bonis | Wynne Davidson |
| 25.09.2005 Manjimup Standard (WA) | 5 | 305 | 268 |
| 01.10.2006 Manjimup (WA) | 6 | 293 | 335 |
| 22.10.2006 Rockingham (WA) | 7 | 314 | 388 |
| 29.09.2007 Pinjarra Maximin (WA) | 5 | 285 | 368 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 299.25 | 339.75 | |
| Spread: | -162 | 162 | |