| Tournament | Round | Marge Roberts | Anne Trotter |
| 08.12.2002 Marathon (WA) | 5 | 365 | 344 |
| 31.05.2003 Western Australian Championships (WA) | 5 | 362 | 427 |
| 13.07.2003 Bassendean (WA) | 1 | 407 | 340 |
| 31.08.2003 Yokine (WA) | 6 | 388 | 287 |
| 25.09.2005 Manjimup Standard (WA) | 2 | 336 | 449 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 371.6 | 369.4 | |
| Spread: | 11 | -11 | |