| Date | Tournament | State | Round | Marge Roberts | Bettina Tonkin |
|---|---|---|---|---|---|
| 23/10/2005 | Rockingham | WA | 5 | 274 | 505 |
| 16/08/2009 | ROCKINGHAM 2009 | WA | 5 | 289 | 376 |
| 06/06/2016 | WA Championship | WA | 5 | 390 | 373 |
| 21/08/2016 | COOGEE | WA | 7 | 284 | 444 |
| 22/01/2023 | January Open | WA | 5 | 284 | 362 |
| 21/05/2023 | Melville 2023 | WA | 4 | 346 | 265 |
| 04/06/2023 | WA State Champs 2023 | WA | 2 | 338 | 417 |
| 04/06/2023 | WA State Champs 2023 | WA | 12 | 310 | 354 |
| 08/10/2023 | October Round Robin | WA | 2 | 334 | 365 |
| 14/01/2024 | January Open | WA | 2 | 366 | 326 |
| 02/06/2024 | WA State Championship | WA | 18 | 359 | 263 |
| 11/08/2024 | Glenys Lawrie Memorial | WA | 4 | 326 | 360 |
| 10/11/2024 | November Trisection | WA | 1 | 315 | 393 |
| 12/01/2025 | January Open | WA | 2 | 413 | 277 |
| 09/02/2025 | February Bisection | WA | 5 | 317 | 317 |
| 09/03/2025 | March Trisection | WA | 2 | 368 | 332 |
| 04/05/2025 | Melville Tournament | WA | 6 | 384 | 346 |
| 01/06/2025 | WA Championship 2025 | WA | 7 | 343 | 379 |
| 01/06/2025 | WA Championship 2025 | WA | 14 | 338 | 289 |
| 17/08/2025 | Bassendean 2025 | WA | 1 | 437 | 307 |
| 05/10/2025 | October Bisection | WA | 3 | 366 | 262 |
| 09/11/2025 | November Bisection | WA | 5 | 377 | 305 |
| 08/02/2026 | February Bi-section | WA | 4 | 356 | 280 |
| 08/03/2026 | March Trisect | WA | 6 | 387 | 311 |
| 01/06/2026 | WA STATE CHAMPIONSHIPS | WA | 5 | 351 | 329 |
| 01/06/2026 | WA STATE CHAMPIONSHIPS | WA | 11 | 397 | 273 |
| 01/06/2026 | WA STATE CHAMPIONSHIPS | WA | 13 | 308 | 364 |
| 05/07/2026 | AGM Bisection | WA | 5 | 356 | 328 |
| Head-to-head after 28 games | 16.5 | 11.5 | |||
| Average score | 346.89 | 339.36 | |||
| Spread | 211 | -211 | |||