| Tournament | Round | John Spaan | Olga Visser |
| 18.07.2004 Winter Masters (NSW) | 8 | 294 | 409 |
| 18.09.2005 Australian Masters & State Challenge Trophy (VIC) | 13 | 432 | 384 |
| 03.10.2005 New South Wales Championships (NSW) | 6 | 253 | 456 |
| 03.10.2005 New South Wales Championships (NSW) | 18 | 354 | 407 |
| 09.04.2007 Australian Championships (NSW) | 17 | 423 | 344 |
| 13.09.2008 MASTERS AND STATE CHALLENGE TROPHY (VIC) | 3 | 377 | 406 |
| 04.10.2008 NSW CHAMPIONSHIPS 08 (NSW) | 19 | 332 | 494 |
| 25.01.2009 City of Sydney International Masters (NSW) | 4 | 510 | 308 |
| 05.04.2010 Aus Championship (SA) | 3 | 408 | 366 |
| Head-to-head after 9 games | 4 | 5 | |
| Average score | 375.88 | 397.11 | |
| Spread: | -191 | 191 | |