| Tournament | Round | Ivy Nicholls | Cheryl Michler |
| 15.04.1998 Australian Championships (TAS) | 10 | 281 | 347 |
| 21.04.2003 Australian Championships (SA) | 14 | 398 | 367 |
| 25.04.2011 Aus Championship (ACT) | 24 | 374 | 341 |
| 09.04.2012 Australian Championship (TAS) | 4 | 437 | 342 |
| 09.04.2012 Australian Championship (TAS) | 14 | 326 | 389 |
| 22.04.2019 2019 Australian Championship (TAS) | 15 | 244 | 438 |
| Head-to-head after 6 games | 3 | 3 | |
| Average score | 343.33 | 370.66 | |
| Spread: | -164 | 164 | |