| Tournament | Round | Colleen McCormick | Maretta Walton |
| 14.03.1999 Bunbury (WA) | 2 | 340 | 316 |
| 30.05.1999 Melville (WA) | 3 | 362 | 432 |
| 11.07.1999 Western Australian Masters (WA) | 7 | 403 | 348 |
| 13.02.2000 Fremantle (WA) | 4 | 335 | 427 |
| 19.03.2000 Bunbury (WA) | 1 | 412 | 309 |
| 02.09.2001 Western Australian Masters (WA) | 5 | 362 | 352 |
| Head-to-head after 6 games | 4 | 2 | |
| Average score | 369 | 364 | |
| Spread: | 30 | -30 | |