| Tournament | Round | Marge Roberts | Muriel Retford |
| 30.05.1999 Melville (WA) | 2 | 289 | 391 |
| 08.10.2000 Rockingham (WA) | 5 | 394 | 283 |
| 31.10.2005 Coogee (WA) | 7 | 351 | 377 |
| 21.05.2006 Melville (WA) | 1 | 311 | 353 |
| 24.08.2008 Rockingham (WA) | 1 | 283 | 294 |
| Head-to-head after 5 games | 1 | 4 | |
| Average score | 325.6 | 339.6 | |
| Spread: | -70 | 70 | |