| Tournament | Round | Olga Visser | Dianne Davis |
| 22.04.2000 Australian Championships (QLD) | 6 | 313 | 423 |
| 27.01.2002 City of Sydney International Masters (NSW) | 3 | 500 | 348 |
| 09.03.2002 South Australian Championships (SA) | 12 | 400 | 325 |
| 27.01.2003 City of Sydney International Masters (NSW) | 14 | 371 | 272 |
| 21.04.2003 Australian Championships (SA) | 11 | 289 | 385 |
| 25.04.2011 Aus Championship (ACT) | 10 | 303 | 435 |
| 01.04.2013 Australian Championship (QLD) | 20 | 430 | 353 |
| 06.04.2015 Australian Championship (VIC) | 8 | 447 | 303 |
| 25.08.2019 WESPA Seniors 2019 (QLD) | 10 | 404 | 451 |
| 25.08.2019 WESPA Seniors 2019 (QLD) | 19 | 394 | 346 |
| 02.04.2026 Australian Womens Champ (ACT) | 3 | 366 | 297 |
| Head-to-head after 11 games | 7 | 4 | |
| Average score | 383.36 | 358 | |
| Spread: | 279 | -279 | |