| Tournament | Round | Chris Ostrowski | Dianne Brumby |
| 21.04.2014 Australian Championship (NSW) | 19 | 445 | 400 |
| 19.05.2019 ULLADULLA CHAMPIONSHIP (NSW) | 9 | 370 | 361 |
| 19.05.2019 ULLADULLA CHAMPIONSHIP (NSW) | 13 | 383 | 441 |
| 03.04.2021 OZ CHAMPS (NSW) | 24 | 450 | 397 |
| 03.10.2022 2022 NSW CHAMPIONSHIP (NSW) | 12 | 377 | 395 |
| 03.10.2022 2022 NSW CHAMPIONSHIP (NSW) | 15 | 284 | 398 |
| 02.09.2023 AUSTRALIAN MASTERS (NSW) | 7 | 362 | 350 |
| 02.09.2023 AUSTRALIAN MASTERS (NSW) | 9 | 414 | 353 |
| 30.09.2023 NSW CHAMPIONSHIP (NSW) | 8 | 342 | 445 |
| 30.09.2023 NSW CHAMPIONSHIP (NSW) | 19 | 358 | 467 |
| 07.10.2024 NSW CHAMPIONSHIP 2024 (NSW) | 5 | 458 | 432 |
| 04.04.2026 AUS CHAMPS (ACT) | 10 | 373 | 320 |
| 02.05.2026 RATINGS IMPROVERS No 1 (NSW) | 7 | 397 | 418 |
| Head-to-head after 13 games | 7 | 6 | |
| Average score | 385.61 | 398.23 | |
| Spread: | -164 | 164 | |