| Tournament | Round | Janet Prider | Betty Billing |
| 23.08.1998 August (SA) | 3 | 307 | 316 |
| 22.11.1998 Xmas (SA) | 4 | 316 | 327 |
| 14.02.1999 South Australian Championships (SA) | 6 | 300 | 279 |
| 24.07.2000 July (SA) | 3 | 323 | 304 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 311.5 | 306.5 | |
| Spread: | 20 | -20 | |