| Date | Tournament | State | 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 | 382.50 | 354.83 | |||
| Spread | 166 | -166 | |||