| Tournament | Round | Maree Heynen | Margaret Griggs |
| 31.10.2004 Tasmanian Championships (TAS) | 13 | 333 | 389 |
| 24.03.2008 Australian Championship (VIC) | 8 | 352 | 326 |
| 05.04.2010 Aus Championship (SA) | 23 | 348 | 354 |
| Head-to-head after 3 games | 1 | 2 | |
| Average score | 344.33 | 356.33 | |
| Spread: | -36 | 36 | |