| Tournament | Round | Trish Marchand | Colleen McCormick |
| 20.09.1998 Advanced Intermediate Recreation (WA) | 1 | 281 | 404 |
| 17.01.1999 WA Open (WA) | 4 | 372 | 396 |
| 08.08.1999 Bassendean (WA) | 1 | 340 | 301 |
| 08.10.2000 Rockingham (WA) | 5 | 377 | 342 |
| 04.02.2001 Fremantle (WA) | 2 | 306 | 443 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 335.2 | 377.2 | |
| Spread: | -210 | 210 | |