| Tournament | Round | Margaret Griggs | Betty Foreman |
| 09.04.2012 Australian Championship (TAS) | 18 | 365 | 380 |
| 27.05.2018 BELL WINTER (TAS) | 6 | 338 | 388 |
| 24.06.2018 Kingston June (TAS) | 14 | 374 | 344 |
| 04.11.2018 Tasmanian Championships (TAS) | 3 | 454 | 310 |
| 09.06.2019 Kingston (TAS) | 6 | 401 | 350 |
| 02.02.2020 ulverstone (TAS) | 10 | 410 | 386 |
| 15.03.2020 Kingston (TAS) | 5 | 416 | 378 |
| 01.11.2020 Tasmanian Championship (TAS) | 4 | 386 | 369 |
| 15.05.2021 SH (TAS) | 7 | 442 | 371 |
| Head-to-head after 9 games | 7 | 2 | |
| Average score | 398.44 | 364 | |
| Spread: | 310 | -310 | |