| Tournament | Round | Marge Roberts | Alan Mathews |
| 08.10.2017 Rockingham (WA) | 2 | 374 | 421 |
| 18.03.2018 Joy Deans Memorial (WA) | 6 | 332 | 342 |
| 03.06.2019 WA Championship (WA) | 8 | 349 | 330 |
| 03.06.2019 WA Championship (WA) | 12 | 303 | 377 |
| 19.02.2023 February Bisection (WA) | 6 | 351 | 365 |
| 04.06.2023 WA State Champs 2023 (WA) | 13 | 341 | 383 |
| 02.06.2024 WA State Championship (WA) | 4 | 404 | 379 |
| 12.01.2025 January Open (WA) | 6 | 374 | 388 |
| 01.06.2025 WA Championship 2025 (WA) | 16 | 320 | 373 |
| 14.09.2025 Glenys Lawrie Memorial (WA) | 3 | 399 | 366 |
| 05.10.2025 October Bisection (WA) | 1 | 319 | 502 |
| 07.12.2025 Graham Bell Memorial (WA) | 3 | 321 | 522 |
| 08.02.2026 February Bi-section (WA) | 1 | 333 | 348 |
| Head-to-head after 13 games | 3 | 10 | |
| Average score | 347.69 | 392 | |
| Spread: | -576 | 576 | |