| Tournament | Round | Carol Colwill | Glenys Dettmann |
| 16.10.2011 SA/Vic Border Challenge (SA) | 10 | 318 | 388 |
| 14.07.2013 SA/Vic Border Challenge (SA) | 10 | 308 | 419 |
| 28.03.2016 Australian Championship (SA) | 23 | 419 | 279 |
| Head-to-head after 3 games | 1 | 2 | |
| Average score | 348.33 | 362 | |
| Spread: | -41 | 41 | |