| Tournament | Round | Sybil Boyt | Dieter Jedamski |
| 22.02.1998 Unley February (SA) | 1 | 335 | 321 |
| 21.03.1998 February (SA) | 1 | 453 | 359 |
| 29.03.1998 Unley (SA) | 1 | 335 | 321 |
| 24.05.1998 South Australian Championships (SA) | 3 | 349 | 422 |
| 12.09.1998 September (SA) | 1 | 310 | 330 |
| 14.02.1999 South Australian Championships (SA) | 2 | 398 | 405 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 363.33 | 359.66 | |
| Spread: | 22 | -22 | |