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