| Tournament | Round | Marge Roberts | John Salmon |
| 16.08.2009 ROCKINGHAM 2009 (WA) | 1 | 368 | 249 |
| 02.10.2011 October Open (WA) | 3 | 274 | 477 |
| 03.06.2013 WA Championship (WA) | 18 | 343 | 388 |
| 01.06.2015 WA Champs (WA) | 9 | 404 | 373 |
| 03.06.2019 WA Championship (WA) | 6 | 284 | 427 |
| 03.06.2019 WA Championship (WA) | 16 | 362 | 353 |
| 04.06.2023 WA State Champs 2023 (WA) | 6 | 333 | 377 |
| 06.08.2023 Glenys Lawrie Memorial (WA) | 7 | 297 | 412 |
| 05.11.2023 November Bisection (WA) | 4 | 284 | 407 |
| 10.12.2023 Graham Bell Memorial (WA) | 3 | 351 | 418 |
| 02.06.2024 WA State Championship (WA) | 11 | 305 | 341 |
| 13.04.2025 Joy Deans Memorial (WA) | 1 | 298 | 342 |
| 01.06.2025 WA Championship 2025 (WA) | 10 | 286 | 468 |
| 19.04.2026 Joy Deans Memorial (WA) | 4 | 363 | 367 |
| Head-to-head after 14 games | 3 | 11 | |
| Average score | 325.14 | 385.64 | |
| Spread: | -847 | 847 | |