| Tournament | Round | Marge Roberts | Noela Costello |
| 25.06.2000 Advanced Intermediate Recreation (WA) | 6 | 356 | 299 |
| 10.09.2000 Yokine (WA) | 4 | 323 | 357 |
| 08.12.2002 Marathon (WA) | 3 | 338 | 323 |
| 08.12.2002 Marathon (WA) | 10 | 368 | 251 |
| 13.07.2003 Bassendean (WA) | 6 | 308 | 330 |
| 30.05.2004 Melville (WA) | 7 | 266 | 424 |
| 19.06.2004 Western Australian Championships (WA) | 3 | 311 | 424 |
| Head-to-head after 7 games | 3 | 4 | |
| Average score | 324.28 | 344 | |
| Spread: | -138 | 138 | |