| Tournament | Round | Caroline Scowcroft | Arlene Williams |
| 26.06.2010 ACT Winter Open (ACT) | 1 | 418 | 368 |
| 26.01.2015 City of Sydney International Masters (NSW) | 25 | 500 | 228 |
| 29.01.2017 City of Sydney International Masters (NSW) | 8 | 372 | 386 |
| 25.06.2017 ACT Winter Open (ACT) | 2 | 356 | 347 |
| 28.01.2019 City Of Sydney International Masters (NSW) | 4 | 467 | 375 |
| 28.01.2019 City Of Sydney International Masters (NSW) | 18 | 470 | 374 |
| 30.06.2019 Winter Open (ACT) | 2 | 353 | 296 |
| 24.07.2021 AGM Tournament (ACT) | 3 | 468 | 301 |
| 12.11.2022 ACT Championship (ACT) | 2 | 446 | 317 |
| 12.11.2022 ACT Championship (ACT) | 9 | 403 | 411 |
| 03.12.2022 SUTHERLAND CLUB (NSW) | 5 | 419 | 377 |
| 25.06.2023 ACT WINTER OPEN (ACT) | 5 | 436 | 362 |
| 28.01.2024 CSIM 2024 (NSW) | 10 | 285 | 359 |
| 21.06.2025 actwo25 (ACT) | 8 | 375 | 316 |
| 17.01.2026 ACT Jan 26 (ACT) | 7 | 399 | 352 |
| 02.04.2026 Australian Womens Champ (ACT) | 1 | 402 | 381 |
| 03.04.2026 Mindsport Mini (ACT) | 3 | 333 | 383 |
| 04.04.2026 AUS CHAMPS (ACT) | 9 | 312 | 412 |
| Head-to-head after 18 games | 13 | 5 | |
| Average score | 400.77 | 352.5 | |