| Tournament | Round | Marge Roberts | Joanna Moss |
| 05.11.2023 November Bisection (WA) | 7 | 387 | 438 |
| 02.06.2024 WA State Championship (WA) | 14 | 318 | 332 |
| 06.10.2024 October Bisection (WA) | 6 | 260 | 375 |
| 05.10.2025 October Bisection (WA) | 7 | 343 | 323 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 327 | 367 | |
| Spread: | -160 | 160 | |