| Tournament | Round | Mary-Michal Oxby | Judy Betteridge |
| 25.11.2006 Central Coast (NSW) | 2 | 331 | 225 |
| 09.08.2008 Empire Bay (NSW) | 7 | 315 | 343 |
| 08.08.2009 Empire Bay (NSW) | 3 | 327 | 277 |
| 04.06.2011 Woy Woy (NSW) | 2 | 302 | 359 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 318.75 | 301 | |
| Spread: | 71 | -71 | |