| Tournament | Round | Kate Horan | Trish Marchand |
| 18.10.1998 Rockingham (WA) | 3 | 309 | 343 |
| 14.03.1999 Bunbury (WA) | 6 | 351 | 318 |
| 11.07.1999 Western Australian Masters (WA) | 16 | 335 | 366 |
| 21.10.2001 Rockingham (WA) | 2 | 321 | 392 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 329 | 354.75 | |
| Spread: | -103 | 103 | |