| Tournament | Round | Colleen McCormick | Shirley Allen |
| 26.04.1998 Nedlands (WA) | 6 | 375 | 329 |
| 02.08.1998 Bassendean (WA) | 5 | 415 | 343 |
| 17.01.1999 WA Open (WA) | 2 | 312 | 398 |
| 25.04.1999 Nedlands (WA) | 4 | 461 | 351 |
| 13.08.2000 Western Australian Masters (WA) | 13 | 413 | 441 |
| 08.10.2000 Rockingham (WA) | 2 | 342 | 376 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 386.33 | 373 | |
| Spread: | 80 | -80 | |