| Tournament | Round | John Holgate | Olga Visser |
| 27.01.2001 City of Sydney International Masters (NSW) | 1 | 517 | 259 |
| 22.07.2001 Winter Masters (NSW) | 12 | 416 | 392 |
| 01.10.2001 New South Wales Championships (NSW) | 4 | 376 | 393 |
| 19.01.2002 Baulkham Hills Kick-off (NSW) | 4 | 486 | 320 |
| 21.07.2002 Winter Masters (NSW) | 19 | 401 | 415 |
| 06.10.2003 NSW Championships (NSW) | 17 | 396 | 389 |
| 18.07.2004 Winter Masters (NSW) | 2 | 537 | 264 |
| 03.10.2005 New South Wales Championships (NSW) | 23 | 494 | 289 |
| 28.01.2007 City of Sydney International Masters (NSW) | 2 | 498 | 299 |
| 22.07.2007 Winter Masters (NSW) | 17 | 498 | 324 |
| 30.01.2011 City of Sydney International Masters (NSW) | 3 | 489 | 335 |
| 16.06.2012 Wollongong WORDS Winter (NSW) | 1 | 439 | 327 |
| 28.01.2013 CITY OF SYDNEY MASTERS (NSW) | 4 | 363 | 354 |
| 26.01.2015 City of Sydney International Masters (NSW) | 1 | 437 | 335 |
| 06.11.2015 Perth International (WA) | 6 | 454 | 368 |
| 26.01.2018 Australia Day Open (NSW) | 4 | 530 | 344 |
| 28.01.2018 City of Sydney International Masters (NSW) | 6 | 401 | 395 |
| Head-to-head after 17 games | 15 | 2 | |
| Average score | 454.82 | 341.29 | |
| Spread: | 1930 | -1930 | |