| Tournament | Round | Marge Roberts | Carolyn Watt |
| 13.07.2003 Bassendean (WA) | 5 | 346 | 390 |
| 06.08.2023 Glenys Lawrie Memorial (WA) | 2 | 354 | 382 |
| 02.06.2024 WA State Championship (WA) | 7 | 288 | 463 |
| Head-to-head after 3 games | 0 | 3 | |
| Average score | 329.33 | 411.66 | |
| Spread: | -247 | 247 | |