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