| Tournament | Round | Betty Mitchell | Margaret Sella |
| 12.09.1998 September (SA) | 5 | 293 | 300 |
| 21.03.1999 March (SA) | 5 | 318 | 434 |
| 16.04.2000 Victor Harbour (SA) | 1 | 316 | 384 |
| 22.11.2000 Unley November (SA) | 3 | 302 | 350 |
| Head-to-head after 4 games | 0 | 4 | |
| Average score | 307.25 | 367 | |
| Spread: | -239 | 239 | |