| Date | Tournament | State | Round | Bettina Tonkin | Alan Mathews |
|---|---|---|---|---|---|
| 17/01/1999 | WA Open | WA | 5 | 403 | 317 |
| 02/09/2001 | Western Australian Masters | WA | 3 | 386 | 306 |
| 13/01/2002 | WA Open | WA | 6 | 378 | 421 |
| 10/08/2002 | Western Australian Masters | WA | 3 | 391 | 323 |
| 05/06/2017 | WA Championship | WA | 6 | 368 | 361 |
| 05/06/2017 | WA Championship | WA | 17 | 312 | 372 |
| 14/01/2018 | Jan HALFAM | WA | 3 | 337 | 519 |
| 14/01/2018 | Jan HALFPM | WA | 4 | 380 | 396 |
| 23/06/2019 | Bassendean | WA | 1 | 393 | 342 |
| 16/05/2021 | MELV2021 | WA | 2 | 260 | 463 |
| 05/06/2022 | WA State 2022 | WA | 12 | 300 | 475 |
| 13/11/2022 | BISECTION NOV 2022 | WA | 3 | 367 | 355 |
| 19/02/2023 | February Bisection | WA | 5 | 435 | 421 |
| 04/06/2023 | WA State Champs 2023 | WA | 15 | 363 | 489 |
| 09/07/2023 | AGM BISECTION | WA | 5 | 298 | 461 |
| 02/06/2024 | WA State Championship | WA | 15 | 281 | 451 |
| 01/06/2025 | WA Championship 2025 | WA | 2 | 343 | 329 |
| 01/06/2025 | WA Championship 2025 | WA | 13 | 317 | 510 |
| 05/10/2025 | October Bisection | WA | 7 | 300 | 408 |
| Head-to-head after 19 games | 8 | 11 | |||
| Average score | 348.00 | 406.26 | |||
| Spread | -1107 | 1107 | |||