| Tournament | Round | Doris Schwenn | John Spaan |
| 16.01.1999 January (SA) | 5 | 374 | 388 |
| 23.05.1999 May (SA) | 2 | 410 | 389 |
| 22.08.1999 August (SA) | 1 | 306 | 485 |
| 21.11.1999 November (SA) | 1 | 386 | 479 |
| 23.03.2001 South Australian Championships (SA) | 5 | 297 | 387 |
| Head-to-head after 5 games | 1 | 4 | |
| Average score | 354.6 | 425.6 | |
| Spread: | -355 | 355 | |