| Tournament | Round | William Shakespeare | Olga Visser |
| 25.01.2004 City of Sydney International Masters (NSW) | 6 | 351 | 388 |
| 21.08.2005 Queensland Championships (QLD) | 13 | 360 | 453 |
| 29.01.2006 City of Sydney International Masters (NSW) | 8 | 423 | 396 |
| 28.01.2007 City of Sydney International Masters (NSW) | 10 | 431 | 293 |
| 09.04.2007 Australian Championships (NSW) | 5 | 301 | 431 |
| 22.07.2007 Winter Masters (NSW) | 12 | 427 | 353 |
| 26.01.2008 SYDNEY INTERNL MASTERS (NSW) | 9 | 366 | 427 |
| 11.04.2009 AUST CHAMPIONSHIP (WA) | 23 | 372 | 337 |
| 30.01.2011 City of Sydney International Masters (NSW) | 4 | 372 | 445 |
| 06.04.2015 Australian Championship (VIC) | 6 | 449 | 359 |
| Head-to-head after 10 games | 5 | 5 | |
| Average score | 385.2 | 388.2 | |
| Spread: | -30 | 30 | |