| Tournament | Round | Betty Mitchell | Maureen Gill |
| 07.03.2004 South Australian Championships (SA) | 1 | 310 | 326 |
| 17.04.2006 Australian Championships (QLD) | 10 | 276 | 376 |
| 05.04.2010 Aus Championship (SA) | 2 | 397 | 292 |
| Head-to-head after 3 games | 1 | 2 | |
| Average score | 327.66 | 331.33 | |
| Spread: | -11 | 11 | |