| Tournament | Round | Marge Roberts | Dorothy Kent |
| 30.05.2004 Melville (WA) | 1 | 300 | 399 |
| 23.10.2005 Rockingham (WA) | 7 | 349 | 306 |
| 04.06.2006 Western Australian Championships (WA) | 2 | 334 | 346 |
| 04.06.2007 Western Australian Championships C & D (WA) | 5 | 322 | 328 |
| 16.08.2009 ROCKINGHAM 2009 (WA) | 4 | 417 | 209 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 344.4 | 317.6 | |
| Spread: | 134 | -134 | |