| Tournament | Round | Janet Cotter | Shirley Allen |
| 26.04.1998 Nedlands (WA) | 4 | 361 | 452 |
| 14.03.1999 Bunbury (WA) | 1 | 330 | 403 |
| 12.08.2001 Yokine (WA) | 6 | 383 | 380 |
| 06.04.2003 Nedlands (WA) | 2 | 312 | 342 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 346.5 | 394.25 | |
| Spread: | -191 | 191 | |