| Tournament | Round | Mary Slater | Marlene Brown |
| 20.08.2000 Unley (SA) | 6 | 327 | 353 |
| 21.10.2000 Unley October (SA) | 5 | 305 | 408 |
| 08.02.2004 February Open (SA) | 1 | 330 | 398 |
| 07.03.2004 South Australian Championships (SA) | 10 | 263 | 367 |
| Head-to-head after 4 games | 0 | 4 | |
| Average score | 306.25 | 381.5 | |
| Spread: | -301 | 301 | |