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