| Tournament | Round | Trish Marchand | Elwyn Chalk |
| 30.08.1998 Yokine (WA) | 6 | 308 | 326 |
| 17.01.1999 WA Open (WA) | 2 | 319 | 340 |
| 11.07.1999 Western Australian Masters (WA) | 18 | 401 | 286 |
| 19.03.2000 Bunbury (WA) | 3 | 316 | 389 |
| 14.01.2001 WA Open (WA) | 2 | 338 | 392 |
| 13.01.2002 WA Open (WA) | 2 | 327 | 431 |
| Head-to-head after 6 games | 1 | 5 | |
| Average score | 334.83 | 360.66 | |
| Spread: | -155 | 155 | |