| Tournament | Round | Colleen McCormick | Marge Roberts |
| 12.08.2001 Yokine (WA) | 4 | 357 | 368 |
| 01.06.2008 WA Championships (WA) | 7 | 469 | 326 |
| 01.06.2008 WA Championships (WA) | 13 | 376 | 317 |
| 02.10.2011 October Open (WA) | 1 | 492 | 293 |
| 01.06.2015 WA Champs (WA) | 18 | 405 | 307 |
| 08.10.2017 Rockingham (WA) | 6 | 405 | 374 |
| 18.03.2018 Joy Deans Memorial (WA) | 4 | 372 | 389 |
| 19.05.2019 Melville (WA) | 1 | 288 | 364 |
| Head-to-head after 8 games | 5 | 3 | |
| Average score | 395.5 | 342.25 | |
| Spread: | 426 | -426 | |