| Tournament | Round | Mary Packenham | Betty Billing |
| 23.08.1998 August (SA) | 6 | 319 | 297 |
| 12.09.1998 September (SA) | 2 | 337 | 346 |
| 18.04.1999 Victor Harbour (SA) | 3 | 370 | 299 |
| 21.11.1999 November (SA) | 4 | 306 | 314 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 333 | 314 | |
| Spread: | 76 | -76 | |