| Tournament | Round | Carol Harrison | Colleen McCormick |
| 12.07.1998 WA Masters (WA) | 2 | 350 | 444 |
| 02.08.1998 Bassendean (WA) | 1 | 306 | 400 |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 2 | 437 | 416 |
| 19.09.1999 Spring Subiaco (WA) | 6 | 304 | 373 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 349.25 | 408.25 | |
| Spread: | -236 | 236 | |