| Date | Tournament | State | Round | Chris May | Olga Visser |
|---|---|---|---|---|---|
| 30/01/2000 | City of Sydney International Masters | NSW | 13 | 524 | 232 |
| 21/07/2002 | Winter Masters | NSW | 12 | 340 | 450 |
| 12/04/2004 | Australian Championships | ACT | 12 | 490 | 361 |
| 28/11/2004 | Southport | QLD | 6 | 460 | 395 |
| 30/01/2005 | City of Sydney International Masters | NSW | 12 | 459 | 305 |
| 03/10/2005 | New South Wales Championships | NSW | 2 | 480 | 358 |
| 04/02/2007 | Kempsey Challenge | NSW | 9 | 558 | 334 |
| 04/10/2008 | NSW CHAMPIONSHIPS 08 | NSW | 10 | 427 | 428 |
| 25/01/2009 | City of Sydney International Masters | NSW | 14 | 506 | 302 |
| 25/04/2011 | Aus Championship | ACT | 2 | 526 | 366 |
| Head-to-head after 10 games | 8 | 2 | |||
| Average score | 477.00 | 353.10 | |||
| Spread | 1239 | -1239 | |||