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