| Tournament | Round | Betty Billing | Angela Brewer |
| 24.05.1998 South Australian Championships (SA) | 6 | 306 | 311 |
| 19.07.1998 July (SA) | 2 | 354 | 352 |
| 16.01.1999 January (SA) | 6 | 304 | 322 |
| 21.03.1999 March (SA) | 1 | 259 | 392 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 305.75 | 344.25 | |
| Spread: | -154 | 154 | |