| Tournament | Round | Chris Ostrowski | Margaret Andrews |
| 24.11.2007 CENTRAL COAST CHAMPS (NSW) | 6 | 398 | 290 |
| 02.03.2008 Balmain BUGS (NSW) | 4 | 313 | 377 |
| 05.07.2009 Winter Challenge (NSW) | 7 | 376 | 314 |
| 05.10.2009 NSW CHAMPIONSHIPS (NSW) | 22 | 366 | 355 |
| 27.02.2010 Matchplay Qualifier (NSW) | 5 | 470 | 350 |
| 19.06.2010 Wollongong WORDS Winter (NSW) | 4 | 412 | 249 |
| 28.08.2011 WSC Rep Fundraiser (NSW) | 3 | 399 | 303 |
| 11.09.2011 BAULKHAM HILLS (NSW) | 4 | 369 | 291 |
| 17.03.2012 Matchplay (NSW) | 3 | 362 | 356 |
| 20.04.2013 Spot Surprize (NSW) | 4 | 348 | 311 |
| Head-to-head after 10 games | 9 | 1 | |
| Average score | 381.3 | 319.6 | |
| Spread: | 617 | -617 | |