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