| Tournament | Round | Anne Stewart | Marge Roberts |
| 01.06.2008 WA Championships (WA) | 5 | 446 | 288 |
| 06.06.2016 WA Championship (WA) | 1 | 359 | 354 |
| 03.06.2019 WA Championship (WA) | 1 | 330 | 294 |
| 06.08.2023 Glenys Lawrie Memorial (WA) | 3 | 342 | 334 |
| 12.01.2025 January Open (WA) | 3 | 438 | 320 |
| 01.06.2025 WA Championship 2025 (WA) | 1 | 440 | 339 |
| Head-to-head after 6 games | 6 | 0 | |
| Average score | 392.5 | 321.5 | |
| Spread: | 426 | -426 | |