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