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