| Tournament | Round | Joan Buchanan | Chris Ostrowski |
| 15.07.2007 Winter Challenge (NSW) | 3 | 407 | 329 |
| 03.05.2008Sydney West (NSW) | 4 | 305 | 363 |
| 11.07.2009 Glenbrook WYSC Fundraiser (NSW) | 7 | 341 | 297 |
| 31.10.2009 Nowra 2009 (NSW) | 3 | 489 | 451 |
| 19.06.2010 Wollongong WORDS Winter (NSW) | 5 | 301 | 460 |
| Head-to-head after 5 games | 3 | 2 | |
| Average score | 368.6 | 380 | |
| Spread: | -57 | 57 | |