| Tournament | Round | Dianne Davis | Jean McGiffen |
| 08.06.1998 Victorian Championships (VIC) | 15 | 339 | 492 |
| 12.04.2004 Australian Championships (ACT) | 11 | 366 | 420 |
| 09.04.2007 Australian Championships (NSW) | 13 | 387 | 424 |
| Head-to-head after 3 games | 0 | 3 | |
| Average score | 364 | 445.33 | |
| Spread: | -244 | 244 | |