| Tournament | Round | Marge Roberts | Geoff Shepheard |
| 22.01.2023 January Open (WA) | 1 | 287 | 394 |
| 10.12.2023 Graham Bell Memorial (WA) | 1 | 354 | 343 |
| 02.06.2024 WA State Championship (WA) | 5 | 356 | 407 |
| 08.12.2024 Graham Bell Memorial (WA) | 3 | 371 | 370 |
| 19.04.2026 Joy Deans Memorial (WA) | 1 | 273 | 388 |
| Head-to-head after 5 games | 2 | 3 | |
| Average score | 328.2 | 380.4 | |
| Spread: | -261 | 261 | |