| Tournament | Round | Trish Marchand | Alan Mathews |
| 11.07.1999 Western Australian Masters (WA) | 1 | 337 | 361 |
| 08.04.2001 Nedlands (WA) | 1 | 273 | 371 |
| 27.05.2001 Melville (WA) | 6 | 306 | 329 |
| 13.01.2002 WA Open (WA) | 5 | 372 | 413 |
| Head-to-head after 4 games | 0 | 4 | |
| Average score | 322 | 368.5 | |
| Spread: | -186 | 186 | |