| Tournament | Round | Colleen Birch | Olga Visser |
| 25.07.2004 Newcastle (NSW) | 2 | 371 | 333 |
| 09.04.2012 Australian Championship (TAS) | 24 | 419 | 406 |
| 02.02.2014 Kempsey (NSW) | 5 | 362 | 409 |
| 02.02.2014 Kempsey (NSW) | 10 | 292 | 434 |
| 06.11.2015 Perth International (WA) | 4 | 348 | 514 |
| 18.02.2024 February Frolic (QLD) | 4 | 388 | 351 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 363.33 | 407.83 | |
| Spread: | -267 | 267 | |