| Tournament | Round | Olga Visser | Chris May |
| 30.01.2000 City of Sydney International Masters (NSW) | 13 | 232 | 524 |
| 21.07.2002 Winter Masters (NSW) | 12 | 450 | 340 |
| 12.04.2004 Australian Championships (ACT) | 12 | 361 | 490 |
| 28.11.2004 Southport (QLD) | 6 | 395 | 460 |
| 30.01.2005 City of Sydney International Masters (NSW) | 12 | 305 | 459 |
| 03.10.2005 New South Wales Championships (NSW) | 2 | 358 | 480 |
| 04.02.2007 Kempsey Challenge (NSW) | 9 | 334 | 558 |
| 04.10.2008 NSW CHAMPIONSHIPS 08 (NSW) | 10 | 428 | 427 |
| 25.01.2009 City of Sydney International Masters (NSW) | 14 | 302 | 506 |
| 25.04.2011 Aus Championship (ACT) | 2 | 366 | 526 |
| Head-to-head after 10 games | 2 | 8 | |
| Average score | 353.1 | 477 | |
| Spread: | -1239 | 1239 | |