| Tournament | Round | Ivy Nicholls | Joan Riley |
| 08.02.1998 North West (TAS) | 2 | 365 | 319 |
| 20.04.2002 Beaumaris (TAS) | 7 | 284 | 369 |
| 25.01.2004 Ulverstone (TAS) | 8 | 430 | 366 |
| 23.01.2005 Ulverstone (TAS) | 14 | 357 | 329 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 359 | 345.75 | |
| Spread: | 53 | -53 | |