| Tournament | Round | Doris Schwenn | Sybil Boyt |
| 22.02.1998 Unley February (SA) | 3 | 428 | 337 |
| 29.03.1998 Unley (SA) | 3 | 428 | 337 |
| 24.05.1998 South Australian Championships (SA) | 11 | 327 | 407 |
| 14.02.1999 South Australian Championships (SA) | 1 | 479 | 250 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 415.5 | 332.75 | |
| Spread: | 331 | -331 | |