| Date | Tournament | State | 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 | 333.00 | 314.00 | |||
| Spread | 76 | -76 | |||