| Tournament | Round | Marilyn Mackie | Peg Hearfield |
| 12.07.1998 WA Masters (WA) | 17 | 280 | 326 |
| 25.04.1999 Nedlands (WA) | 3 | 374 | 275 |
| 13.06.1999 Advanced Intermediate Recreation (WA) | 5 | 449 | 279 |
| 13.02.2000 Fremantle (WA) | 2 | 341 | 284 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 361 | 291 | |
| Spread: | 280 | -280 | |