| Tournament | Round | Carol Colwill | Marj Miller |
| 14.07.2013 SA/Vic Border Challenge (SA) | 2 | 429 | 406 |
| 22.10.2017 SA/Vic Border Challenge (SA) | 2 | 443 | 356 |
| 24.11.2019 VicSA Border Challenge (SA) | 5 | 299 | 417 |
| Head-to-head after 3 games | 2 | 1 | |
| Average score | 390.33 | 393 | |
| Spread: | -8 | 8 | |