| Tournament | Round | Don Hadley | Olga Visser |
| 02.10.2006 New South Wales Championships (NSW) | 21 | 412 | 357 |
| 28.01.2007 City of Sydney International Masters (NSW) | 13 | 441 | 436 |
| 03.02.2008 Kempsey Challenge & Cup (NSW) | 7 | 384 | 359 |
| 25.01.2009 City of Sydney International Masters (NSW) | 2 | 435 | 489 |
| 01.02.2009 Kempsey (NSW) | 6 | 355 | 424 |
| 05.04.2010 Aus Championship (SA) | 16 | 255 | 379 |
| 17.07.2011 Winter Masters (NSW) | 13 | 387 | 385 |
| 03.10.2011 NSW Championships (NSW) | 7 | 432 | 412 |
| 03.10.2011 NSW Championships (NSW) | 21 | 328 | 388 |
| 05.02.2012 Kempsey (NSW) | 7 | 351 | 370 |
| 04.05.2014 Ocean Shores (NSW) | 6 | 433 | 373 |
| 06.10.2014 NSW Championships (NSW) | 22 | 288 | 365 |
| 03.02.2019 Kempsey Challenge (NSW) | 10 | 355 | 436 |
| Head-to-head after 13 games | 6 | 7 | |
| Average score | 373.53 | 397.92 | |
| Spread: | -317 | 317 | |