| Date | Tournament | State | Round | Zina Costanzo | Doris Schwenn |
|---|---|---|---|---|---|
| 05/04/1999 | Australian Championships | NSW | 6 | 302 | 433 |
| 29/06/2000 | Bordertown | SA | 9 | 354 | 363 |
| 03/11/2002 | SA/Victoria Border Challenge Dimboola | VIC | 8 | 413 | 439 |
| 21/04/2003 | Australian Championships | SA | 17 | 353 | 403 |
| 02/11/2003 | SA/Victoria Border Challenge Dimboola | VIC | 10 | 267 | 326 |
| 02/11/2003 | SA/Victoria Border Challenge Dimboola | VIC | 12 | 324 | 331 |
| Head-to-head after 6 games | 0 | 6 | |||
| Average score | 335.50 | 382.50 | |||
| Spread | -282 | 282 | |||