| Tournament | Round | Ivy Nicholls | Patricia Mitchell |
| 16.04.2001 Australian Championships (VIC) | 13 | 409 | 352 |
| 24.03.2008 Australian Championship (VIC) | 7 | 350 | 361 |
| 05.04.2010 Aus Championship (SA) | 11 | 366 | 367 |
| 05.04.2010 Aus Championship (SA) | 22 | 306 | 505 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 357.75 | 396.25 | |
| Spread: | -154 | 154 | |