| Tournament | Round | Mary Brown | Noela Costello |
| 08.08.1999 Bassendean (WA) | 2 | 294 | 240 |
| 19.09.1999 Spring Subiaco (WA) | 3 | 262 | 351 |
| 17.10.1999 Rockingham (WA) | 3 | 278 | 327 |
| 27.03.2000 Nedlands (WA) | 3 | 268 | 346 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 275.5 | 316 | |
| Spread: | -162 | 162 | |