| Tournament | Round | Norma Tracey | Olga Visser |
| 30.01.2000 City of Sydney International Masters (NSW) | 1 | 395 | 369 |
| 21.07.2002 Winter Masters (NSW) | 2 | 414 | 367 |
| 30.01.2005 City of Sydney International Masters (NSW) | 5 | 369 | 386 |
| 26.01.2018 Australia Day Open (NSW) | 6 | 324 | 407 |
| Head-to-head after 4 games | 2 | 2 | |
| Average score | 375.5 | 382.25 | |
| Spread: | -27 | 27 | |