| Tournament | Round | Betty Billing | Barbara Senior |
| 24.05.1998 South Australian Championships (SA) | 1 | 304 | 287 |
| 14.02.1999 South Australian Championships (SA) | 3 | 295 | 402 |
| 13.02.2000 South Australian Championships (SA) | 2 | 344 | 394 |
| Head-to-head after 3 games | 1 | 2 | |
| Average score | 314.33 | 361 | |
| Spread: | -140 | 140 | |