| Tournament | Round | Margaret Bishop | Arlene Williams |
| 21.04.2014 Australian Championship (NSW) | 16 | 312 | 435 |
| 28.03.2016 Australian Championship (SA) | 14 | 517 | 302 |
| 19.04.2025 National Championship and Plate (SA) | 7 | 363 | 344 |
| 02.04.2026 Australian Womens Champ (ACT) | 3 | 408 | 370 |
| Head-to-head after 4 games | 3 | 1 | |
| Average score | 400 | 362.75 | |
| Spread: | 149 | -149 | |