| Tournament | Round | Chris Ostrowski | Margaret Clifford |
| 24.11.2007 CENTRAL COAST CHAMPS (NSW) | 9 | 402 | 453 |
| 15.03.2008 Wyong (NSW) | 7 | 298 | 344 |
| 29.11.2015 Central Coast Championships (NSW) | 5 | 356 | 471 |
| 26.11.2017 Central Coast Champ (NSW) | 7 | 380 | 320 |
| 26.11.2017 Central Coast Champ (NSW) | 12 | 321 | 401 |
| 26.11.2023 Central Coast Open (NSW) | 1 | 372 | 306 |
| Head-to-head after 6 games | 2 | 4 | |
| Average score | 354.83 | 382.5 | |
| Spread: | -166 | 166 | |