| Tournament | Round | Betty Foreman | Dianne Gibson |
| 09.04.2007 Australian Championships (NSW) | 5 | 329 | 313 |
| 28.03.2016 Australian Championship (SA) | 16 | 383 | 375 |
| 02.04.2018 2018 National Championship (ACT) | 20 | 321 | 316 |
| Head-to-head after 3 games | 3 | 0 | |
| Average score | 344.33 | 334.66 | |
| Spread: | 29 | -29 | |