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