| Date | Tournament | State | 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 | 395.50 | 342.25 | |||
| Spread | 426 | -426 | |||