| Tournament | Round | Doris Schwenn | Derek McKenzie |
| 15.04.1998 Australian Championships (TAS) | 17 | 397 | 406 |
| 05.04.1999 Australian Championships (NSW) | 1 | 351 | 477 |
| 05.04.1999 Australian Championships (NSW) | 21 | 306 | 428 |
| Head-to-head after 3 games | 0 | 3 | |
| Average score | 351.33 | 437 | |
| Spread: | -257 | 257 | |