| Tournament | Round | Janet Roberts | Glenys Dettmann |
| 24.06.2012 CLOTA COTTAGE (VIC) | 5 | 361 | 317 |
| 11.08.2018 Saturday Sessions 6 (VIC) | 4 | 251 | 545 |
| 27.04.2019 Saturday Sessions 3D (VIC) | 4 | 314 | 382 |
| Head-to-head after 3 games | 1 | 2 | |
| Average score | 308.66 | 414.66 | |
| Spread: | -318 | 318 | |