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