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